
=head1 NAME

Image::ExifTool::TagNames - ExifTool tag name documentation

=head1 DESCRIPTION

This document contains a complete list of ExifTool tag names, organized into
tables based on information type.  Tag names are used to indicate the
specific meta information that is extracted or written in an image.

=head1 TAG TABLES

The tables listed below give the names of all tags recognized by ExifTool,
excluding shortcut and unknown tags.

A B<Tag ID> or B<Index> is given in the first column of each table.  A
B<Tag ID> is the computer-readable equivalent of a tag name, and is the
identifier that is actually stored in the file.  An B<Index> refers to the
location of the information, and is used if the information is stored at a
fixed position in a data block.

A B<Tag Name> is the handle by which the information is accessed.  In some
instances, more than one name may correspond to a single tag ID.  In these
cases, the actual name used depends on the context in which the information
is found.  Case is not significant for tag names.  A question mark after a
tag name indicates that the information is either not understood, not
verified, or not very useful -- these tags are not extracted by ExifTool
unless the Unknown (-u) option is enabled.

The B<Writable> column indicates whether the tag is writable by ExifTool.
Anything but an "N" in this column means the tag is writable.  A "Y"
indicates writable information that is either unformatted or written using
the existing format.  Other expressions give details about the information
format, and vary depending on the general type of information.  The format
name may be followed by a number in square brackets to indicate the number
of values written, or the number of characters in a fixed-length string
(including a null terminator which is added if required).

An asterisk (C<*>) in the B<Writable> column indicates a 'protected' tag
which is not writable directly, but is set via a Composite tag.  A tilde
(C<~>) indicates a tag this is only writable when print conversion is
disabled (by setting PrintConv to 0, or using the -n option).  An
exclamation point (C<!>) indicates a tag that is considered unsafe to write
under normal circumstances.  These 'unsafe' tags are not set when calling
SetNewValuesFromFile() or when using the exiftool -TagsFromFile option, and
care should be taken when editing them manually since they may affect the
way an image is rendered.

The HTML version of these tables also list possible B<Values> for all tags
which have a discrete set of values, and give B<Notes> for some tags.

B<Note>: If you are familiar with common meta-information tag names, you may
find that some ExifTool tag names are different than expected.  The usual
reason for this is to make the tag names more consistent across different
types of meta information.  To determine a tag name, either consult this
documentation or run C<exiftool -S> on a file containing the information in
question.

=head2 EXIF Tags

EXIF meta information may exist within different Image File Directories
(IFD's) of an image.  The names of these IFD's correspond to the
ExifTool family 1 group names.  When writing EXIF information, the
default B<Group> listed below is used unless another group is specified.

  Tag ID   Tag Name                  Group      Writable
  ------   --------                  -----      --------
  0x0001   InteropIndex              InteropIFD string
  0x0002   InteropVersion            InteropIFD undef
  0x00fe   SubfileType               IFD0       int32u!
  0x00ff   OldSubfileType            IFD0       int16u!
  0x0100   ImageWidth                IFD0       int32u!
  0x0101   ImageHeight               IFD0       int32u!
  0x0102   BitsPerSample             IFD0       int16u[n]!
  0x0103   Compression               IFD0       int16u!
  0x0106   PhotometricInterpretation IFD0       int16u!
  0x0107   Thresholding              IFD0       int16u!
  0x0108   CellWidth                 IFD0       int16u!
  0x0109   CellLength                IFD0       int16u!
  0x010a   FillOrder                 IFD0       int16u!
  0x010d   DocumentName              IFD0       string
  0x010e   ImageDescription          IFD0       string
  0x010f   Make                      IFD0       string
  0x0110   Model                     IFD0       string
  0x0111   StripOffsets              -          N
           PreviewImageStart         IFD0       int32u*
  0x0112   Orientation               IFD0       int16u
  0x0115   SamplesPerPixel           IFD0       int16u!
  0x0116   RowsPerStrip              IFD0       int32u!
  0x0117   StripByteCounts           -          N
           PreviewImageLength        IFD0       int32u*
  0x0118   MinSampleValue            IFD0       int16u
  0x0119   MaxSampleValue            IFD0       int16u
  0x011a   XResolution               IFD0       rational32u
  0x011b   YResolution               IFD0       rational32u
  0x011c   PlanarConfiguration       IFD0       int16u!
  0x011d   PageName                  IFD0       string
  0x011e   XPosition                 IFD0       rational32u
  0x011f   YPosition                 IFD0       rational32u
  0x0120   FreeOffsets               -          N
  0x0121   FreeByteCounts            -          N
  0x0122   GrayResponseUnit          IFD0       int16u
  0x0123   GrayResponseCurve         -          N
  0x0124   T4Options                 -          N
  0x0125   T6Options                 -          N
  0x0128   ResolutionUnit            IFD0       int16u
  0x0129   PageNumber                IFD0       int16u[2]
  0x012c   ColorResponseUnit         -          N
  0x012d   TransferFunction          -          N
  0x0131   Software                  IFD0       string
  0x0132   ModifyDate                IFD0       string
  0x013b   Artist                    IFD0       string
  0x013c   HostComputer              IFD0       string
  0x013d   Predictor                 IFD0       int16u!
  0x013e   WhitePoint                IFD0       rational32u[2]
  0x013f   PrimaryChromaticities     IFD0       rational32u[6]
  0x0140   ColorMap                  -          N
  0x0141   HalftoneHints             IFD0       int16u[2]
  0x0142   TileWidth                 IFD0       int32u!
  0x0143   TileLength                IFD0       int32u!
  0x0144   TileOffsets               -          N
  0x0145   TileByteCounts            -          N
  0x0146   BadFaxLines               -          N
  0x0147   CleanFaxData              -          N
  0x0148   ConsecutiveBadFaxLines    -          N
  0x014a   SubIFD                    -          EXIF
  0x014c   InkSet                    IFD0       int16u
  0x014d   InkNames                  -          N
  0x014e   NumberofInks              -          N
  0x0150   DotRange                  IFD0       string
  0x0151   TargetPrinter             -          N
  0x0152   ExtraSamples              -          N
  0x0153   SampleFormat              -          N
  0x0154   SMinSampleValue           -          N
  0x0155   SMaxSampleValue           -          N
  0x0156   TransferRange             -          N
  0x0157   ClipPath                  -          N
  0x0158   XClipPathUnits            -          N
  0x0159   YClipPathUnits            -          N
  0x015a   Indexed                   -          N
  0x015b   JPEGTables                -          N
  0x015f   OPIProxy                  -          N
  0x0190   GlobalParametersIFD       -          EXIF
  0x0191   ProfileType               -          N
  0x0192   FaxProfile                -          N
  0x0193   CodingMethods             -          N
  0x0194   VersionYear               -          N
  0x0195   ModeNumber                -          N
  0x01b1   Decode                    -          N
  0x01b2   DefaultImageColor         -          N
  0x0200   JPEGProc                  -          N
  0x0201   ThumbnailOffset           IFD1       int32u*
           PreviewImageStart         MakerNotes int32u*
           JpgFromRawStart           SubIFD     int32u*
           JpgFromRawStart           IFD2       int32u*
           OtherImageStart           -          N
  0x0202   ThumbnailLength           IFD1       int32u*
           PreviewImageLength        MakerNotes int32u*
           JpgFromRawLength          SubIFD     int32u*
           JpgFromRawLength          IFD2       int32u*
           OtherImageLength          -          N
  0x0203   JPEGRestartInterval       -          N
  0x0205   JPEGLosslessPredictors    -          N
  0x0206   JPEGPointTransforms       -          N
  0x0207   JPEGQTables               -          N
  0x0208   JPEGDCTables              -          N
  0x0209   JPEGACTables              -          N
  0x0211   YCbCrCoefficients         IFD0       rational32u[3]
  0x0212   YCbCrSubSampling          IFD0       int16u[2]!
  0x0213   YCbCrPositioning          IFD0       int16u
  0x0214   ReferenceBlackWhite       IFD0       rational32u[6]
  0x022f   StripRowCounts            -          N
  0x02bc   ApplicationNotes          -          XMP
  0x1000   RelatedImageFileFormat    -          N
  0x1001   RelatedImageWidth         InteropIFD int16u
  0x1002   RelatedImageLength        InteropIFD int16u
  0x800d   ImageID                   -          N
  0x80a4   WangAnnotation            -          N
  0x80e3   Matteing                  -          N
  0x80e4   DataType                  -          N
  0x80e5   ImageDepth                -          N
  0x80e6   TileDepth                 -          N
  0x827d   Model2                    -          N
  0x828d   CFARepeatPatternDim       -          N
  0x828e   CFAPattern2               -          N
  0x828f   BatteryLevel              -          N
  0x8298   Copyright                 IFD0       string
  0x829a   ExposureTime              ExifIFD    rational32u
  0x829d   FNumber                   ExifIFD    rational32u
  0x830e   PixelScale                -          N
  0x83bb   IPTC-NAA                  IFD0       IPTC
  0x8474   IntergraphPacketData      -          N
  0x847f   IntergraphFlagRegisters   -          N
  0x8480   IntergraphMatrix          -          N
  0x8482   ModelTiePoint             -          N
  0x84e0   Site                      -          N
  0x84e1   ColorSequence             -          N
  0x84e2   IT8Header                 -          N
  0x84e3   RasterPadding             -          N
  0x84e4   BitsPerRunLength          -          N
  0x84e5   BitsPerExtendedRunLength  -          N
  0x84e6   ColorTable                -          N
  0x84e7   ImageColorIndicator       -          N
  0x84e8   BackgroundColorIndicator  -          N
  0x84e9   ImageColorValue           -          N
  0x84ea   BackgroundColorValue      -          N
  0x84eb   PixelIntensityRange       -          N
  0x84ec   TransparencyIndicator     -          N
  0x84ed   ColorCharacterization     -          N
  0x84ee   HCUsage                   -          N
  0x8568   IPTC-NAA2                 -          IPTC
  0x85d8   ModelTransform            -          N
  0x8649   PhotoshopSettings         -          N
  0x8769   ExifOffset                -          EXIF
  0x8773   ICC_Profile               -          ICC_Profile
  0x87ac   ImageLayer                -          N
  0x87af   GeoTiffDirectory          -          N
  0x87b0   GeoTiffDoubleParams       -          N
  0x87b1   GeoTiffAsciiParams        -          N
  0x8822   ExposureProgram           ExifIFD    int16u
  0x8824   SpectralSensitivity       ExifIFD    string
  0x8825   GPSInfo                   -          GPS
  0x8827   ISO                       ExifIFD    int16u
  0x8828   Opto-ElectricConvFactor   -          N
  0x8829   Interlace                 -          N
  0x882a   TimeZoneOffset            ExifIFD    int16s
  0x882b   SelfTimerMode             ExifIFD    int16u
  0x885c   FaxRecvParams             -          N
  0x885d   FaxSubAddress             -          N
  0x885e   FaxRecvTime               -          N
  0x9000   ExifVersion               ExifIFD    undef
  0x9003   DateTimeOriginal          ExifIFD    string
  0x9004   CreateDate                ExifIFD    string
  0x9101   ComponentsConfiguration   ExifIFD    undef
  0x9102   CompressedBitsPerPixel    ExifIFD    rational32u
  0x9201   ShutterSpeedValue         ExifIFD    rational32s
  0x9202   ApertureValue             ExifIFD    rational32u
  0x9203   BrightnessValue           ExifIFD    rational32s
  0x9204   ExposureCompensation      ExifIFD    rational32s
  0x9205   MaxApertureValue          ExifIFD    rational32u
  0x9206   SubjectDistance           ExifIFD    rational32u
  0x9207   MeteringMode              ExifIFD    int16u
  0x9208   LightSource               ExifIFD    int16u
  0x9209   Flash                     ExifIFD    int16u
  0x920a   FocalLength               ExifIFD    rational32u
  0x920b   FlashEnergy               -          N
  0x920c   SpatialFrequencyResponse  -          N
  0x920d   Noise                     -          N
  0x920e   FocalPlaneXResolution     -          N
  0x920f   FocalPlaneYResolution     -          N
  0x9210   FocalPlaneResolutionUnit  -          N
  0x9211   ImageNumber               -          N
  0x9212   SecurityClassification    -          N
  0x9213   ImageHistory              -          N
  0x9214   SubjectLocation           ExifIFD    int16u[4]
  0x9215   ExposureIndex             -          N
  0x9216   TIFF-EPStandardID         -          N
  0x9217   SensingMethod             -          N
  0x923f   StoNits                   -          N
  0x927c   MakerNoteCanon            ExifIFD    Canon
           MakerNoteCasio            ExifIFD    Casio
           MakerNoteCasio2           ExifIFD    Casio Type2
           MakerNoteCasioEX-Z3       ExifIFD    Casio Type2
           MakerNoteFujiFilm         ExifIFD    FujiFilm
           MakerNoteKodak1a          ExifIFD    Kodak
           MakerNoteKodak1b          ExifIFD    Kodak
           MakerNoteKodak2           ExifIFD    Kodak Type2
           MakerNoteKodak3           ExifIFD    Kodak Type3
           MakerNoteKodak4           ExifIFD    Kodak Type4
           MakerNoteKodak5           ExifIFD    Kodak Type5
           MakerNoteKodak6a          ExifIFD    Kodak Type6
           MakerNoteKodak6b          ExifIFD    Kodak Type6
           MakerNoteKodakUnknown     ExifIFD    Kodak Unknown
           MakerNoteKyocera          ExifIFD    Unknown
           MakerNoteMinolta          ExifIFD    Minolta
           MakerNoteNikon            ExifIFD    Nikon
           MakerNoteNikon2           ExifIFD    Nikon MakerNotesB
           MakerNoteNikon3           ExifIFD    Nikon
           MakerNoteOlympus          ExifIFD    Olympus
           MakerNoteLeica            ExifIFD    Panasonic
           MakerNotePanasonic        ExifIFD    Panasonic
           MakerNotePentax           ExifIFD    Pentax
           MakerNoteRicoh            ExifIFD    Ricoh
           MakerNoteRicohText        ExifIFD    Ricoh Text
           PreviewImage              ExifIFD    undef
           MakerNoteSanyo            ExifIFD    Sanyo
           MakerNoteSigma            ExifIFD    Sigma
           MakerNoteSony             ExifIFD    Sony
           MakerNoteUnknown          ExifIFD    Unknown
  0x9286   UserComment               ExifIFD    undef
  0x9290   SubSecTime                ExifIFD    string
  0x9291   SubSecTimeOriginal        ExifIFD    string
  0x9292   SubSecTimeDigitized       ExifIFD    string
  0x935c   ImageSourceData           -          N
  0x9c9b   XPTitle                   ExifIFD    undef
  0x9c9c   XPComment                 ExifIFD    undef
  0x9c9d   XPAuthor                  ExifIFD    undef
  0x9c9e   XPKeywords                ExifIFD    undef
  0x9c9f   XPSubject                 ExifIFD    undef
  0xa000   FlashpixVersion           ExifIFD    undef
  0xa001   ColorSpace                ExifIFD    int16u
  0xa002   ExifImageWidth            ExifIFD    int16u
  0xa003   ExifImageLength           ExifIFD    int16u
  0xa004   RelatedSoundFile          ExifIFD    string
  0xa005   InteropOffset             -          EXIF
  0xa20b   FlashEnergy               ExifIFD    rational32u
  0xa20c   SpatialFrequencyResponse  -          N
  0xa20d   Noise                     -          N
  0xa20e   FocalPlaneXResolution     ExifIFD    rational32u
  0xa20f   FocalPlaneYResolution     ExifIFD    rational32u
  0xa210   FocalPlaneResolutionUnit  ExifIFD    int16u
  0xa211   ImageNumber               -          N
  0xa212   SecurityClassification    -          N
  0xa213   ImageHistory              -          N
  0xa214   SubjectLocation           ExifIFD    int16u[2]
  0xa215   ExposureIndex             ExifIFD    rational32u
  0xa216   TIFF-EPStandardID         -          N
  0xa217   SensingMethod             ExifIFD    int16u
  0xa300   FileSource                ExifIFD    undef
  0xa301   SceneType                 ExifIFD    undef
  0xa302   CFAPattern                ExifIFD    undef
  0xa401   CustomRendered            ExifIFD    int16u
  0xa402   ExposureMode              ExifIFD    int16u
  0xa403   WhiteBalance              ExifIFD    int16u
  0xa404   DigitalZoomRatio          ExifIFD    rational32u
  0xa405   FocalLengthIn35mmFormat   ExifIFD    int16u
  0xa406   SceneCaptureType          ExifIFD    int16u
  0xa407   GainControl               ExifIFD    int16u
  0xa408   Contrast                  ExifIFD    int16u
  0xa409   Saturation                ExifIFD    int16u
  0xa40a   Sharpness                 ExifIFD    int16u
  0xa40b   DeviceSettingDescription  -          N
  0xa40c   SubjectDistanceRange      ExifIFD    int16u
  0xa420   ImageUniqueID             ExifIFD    string
  0xa480   GDALMetadata              -          N
  0xa481   GDALNoData                -          N
  0xa500   Gamma                     ExifIFD    rational32u
  0xc350   FilmProductCode           -          N
  0xc351   ImageSourceEK             -          N
  0xc352   CaptureConditionsPAR      -          N
  0xc353   CameraOwner               -          N
  0xc354   SerialNumber              -          N
  0xc355   UserSelectGroupTitle      -          N
  0xc356   DealerIDNumber            -          N
  0xc357   CaptureDeviceFID          -          N
  0xc358   EnvelopeNumber            -          N
  0xc359   FrameNumber               -          N
  0xc35a   FilmCategory              -          N
  0xc35b   FilmGencode               -          N
  0xc35c   ModelAndVersion           -          N
  0xc35d   FilmSize                  -          N
  0xc35e   SBA_RGBShifts             -          N
  0xc35f   SBAInputImageColorspace   -          N
  0xc360   SBAInputImageBitDepth     -          N
  0xc361   SBAExposureRecord         -          N
  0xc362   UserAdjSBA_RGBShifts      -          N
  0xc363   ImageRotationStatus       -          N
  0xc364   RollGuidElements          -          N
  0xc365   MetadataNumber            -          N
  0xc366   EditTagArray              -          N
  0xc367   Magnification             -          N
  0xc36c   NativeXResolution         -          N
  0xc36d   NativeYResolution         -          N
  0xc36e   KodakEffectsIFD           -          Kodak SpecialEffects
  0xc36f   KodakBordersIFD           -          Kodak Borders
  0xc37a   NativeResolutionUnit      -          N
  0xc418   SourceImageDirectory      -          N
  0xc419   SourceImageFileName       -          N
  0xc41a   SourceImageVolumeName     -          N
  0xc427   OceScanjobDesc            -          N
  0xc428   OceApplicationSelector    -          N
  0xc429   OceIDNumber               -          N
  0xc42a   OceImageLogic             -          N
  0xc44f   Annotations               -          N
  0xc46c   PrintQuality              -          N
  0xc46e   ImagePrintStatus          -          N
  0xc4a5   PrintIM                   IFD0       PrintIM
  0xc612   DNGVersion                IFD0       int8u[4]
  0xc613   DNGBackwardVersion        -          N
  0xc614   UniqueCameraModel         IFD0       string
  0xc615   LocalizedCameraModel      IFD0       string
  0xc616   CFAPlaneColor             -          N
  0xc617   CFALayout                 -          N
  0xc618   LinearizationTable        -          N
  0xc619   BlackLevelRepeatDim       -          N
  0xc61a   BlackLevel                -          N
  0xc61b   BlackLevelDeltaH          -          N
  0xc61c   BlackLevelDeltaV          -          N
  0xc61d   WhiteLevel                -          N
  0xc61e   DefaultScale              IFD0       rational32u[2]
  0xc61f   DefaultCropOrigin         IFD0       int32u[2]
  0xc620   DefaultCropSize           IFD0       int32u[2]
  0xc621   ColorMatrix1              -          N
  0xc622   ColorMatrix2              -          N
  0xc623   CameraCalibration1        -          N
  0xc624   CameraCalibration2        -          N
  0xc625   ReductionMatrix1          -          N
  0xc626   ReductionMatrix2          -          N
  0xc627   AnalogBalance             -          N
  0xc628   AsShotNeutral             -          N
  0xc629   AsShotWhiteXY             -          N
  0xc62a   BaselineExposure          IFD0       rational32s
  0xc62b   BaselineNoise             IFD0       rational32u
  0xc62c   BaselineSharpness         IFD0       rational32u
  0xc62d   BayerGreenSplit           IFD0       int32u
  0xc62e   LinearResponseLimit       IFD0       rational32u
  0xc62f   DNGCameraSerialNumber     IFD0       string
  0xc630   DNGLensInfo               IFD0       rational32u[4]
  0xc631   ChromaBlurRadius          IFD0       rational32u
  0xc632   AntiAliasStrength         IFD0       rational32u
  0xc633   ShadowScale               IFD0       rational32u
  0xc634   DNGPrivateData            -          N
  0xc635   MakerNoteSafety           IFD0       int16u
  0xc65a   CalibrationIlluminant1    -          N
  0xc65b   CalibrationIlluminant2    -          N
  0xc65c   BestQualityScale          IFD0       rational32u
  0xc660   AliasLayerMetadata        -          N
  0xfde8   OwnerName                 ExifIFD    string
  0xfde9   SerialNumber              ExifIFD    string
  0xfdea   Lens                      ExifIFD    string
  0xfe4c   RawFile                   ExifIFD    string
  0xfe4d   Converter                 ExifIFD    string
  0xfe4e   WhiteBalance              ExifIFD    string
  0xfe51   Exposure                  ExifIFD    string
  0xfe52   Shadows                   ExifIFD    string
  0xfe53   Brightness                ExifIFD    string
  0xfe54   Contrast                  ExifIFD    string
  0xfe55   Saturation                ExifIFD    string
  0xfe56   Sharpness                 ExifIFD    string
  0xfe57   Smoothness                ExifIFD    string
  0xfe58   MoireFilter               ExifIFD    string

=head2 XMP Tags

All XMP information is stored as character strings.  An C<integer> in this
format is a string of digits, possibly beginning with a '+' or '-', and a
C<rational> is composed of two C<integer> strings separated by a '/'
character.  A C<date> is a date and/or time string in the format 'YYYY:MM:DD
HH:MM:SS[+/-HH:MM]'.  A C<boolean> is either 'True' or 'False', and
C<lang-alt> is a list of string alternatives in different languages.
Currently, ExifTool only writes the 'x-default' language in C<lang-alt>
lists.

The B<Group> column below gives the XMP schema namespace prefix for each
tag.  The family 1 group names are composed from these schema names with a
leading "XMP-" added.  If the same XMP tag name exists in more than one
group, all groups are written unless a family 1 group name is specified.
ie) If XMP:Contrast is specified, information will be written to both
XMP-crs:Contrast and XMP-exif:Contrast.

Note: that the actual IPTC Core namespace schema prefix is C<Iptc4xmpCore>,
which is the name used in the file, but ExifTool uses C<iptcCore> to
generate the family 1 group name because C<Iptc4xmpCore> is a bit lengthy.

  Tag Name                           Group      Writable
  --------                           -----      --------
  Advisory                           xmp        string
  ApertureValue                      exif       rational
  Artist                             tiff       string
  Author                             pdf        string
  AuthorsPosition                    photoshop  string
  BaseURL                            xmp        string
  BitsPerSample                      tiff       integer
  BlueHue                            crs        string
  BlueSaturation                     crs        string
  Brightness                         crs        string
  BrightnessValue                    exif       rational
  CFAPattern                         exif       N
  CFAPatternColumns                  exif       integer
  CFAPatternRows                     exif       integer
  CFAPatternValues                   exif       integer
  CaptionWriter                      photoshop  string
  Category                           photoshop  string
  Certificate                        xmpRights  string
  ChromaticAberrationB               crs        string
  ChromaticAberrationR               crs        string
  City                               photoshop  string
  ColorNoiseReduction                crs        string
  ColorSpace                         exif       string
  ComponentsConfiguration            exif       string
  CompressedBitsPerPixel             exif       rational
  Compression                        tiff       string
  Contrast                           crs        string
  Contrast                           exif       string
  Contributor                        dc         string
  Copyright                          tiff       lang-alt
  Country                            photoshop  string
  CountryCode                        iptcCore   string
  Coverage                           dc         string
  CreateDate                         xmp        date
  CreationDate                       pdf        date
  Creator                            dc         string
  CreatorContactInfo                 iptcCore   N
  CreatorContactInfoCiAdrCity        iptcCore   string
  CreatorContactInfoCiAdrCtry        iptcCore   string
  CreatorContactInfoCiAdrExtadr      iptcCore   string
  CreatorContactInfoCiAdrPcode       iptcCore   string
  CreatorContactInfoCiAdrRegion      iptcCore   string
  CreatorContactInfoCiEmailWork      iptcCore   string
  CreatorContactInfoCiTelWork        iptcCore   string
  CreatorContactInfoCiUrlWork        iptcCore   string
  CreatorTool                        xmp        string
  Credit                             photoshop  string
  CustomRendered                     exif       string
  Date                               dc         date
  DateCreated                        photoshop  date
  DateTime                           tiff       date
  DateTimeDigitized                  exif       date
  DateTimeOriginal                   exif       date
  DerivedFrom                        xmpMM      N
  DerivedFromDocumentID              xmpMM      string
  DerivedFromInstanceID              xmpMM      string
  DerivedFromManageTo                xmpMM      string
  DerivedFromManageUI                xmpMM      string
  DerivedFromManager                 xmpMM      string
  DerivedFromManagerVariant          xmpMM      string
  DerivedFromRenditionClass          xmpMM      string
  DerivedFromRenditionParams         xmpMM      string
  DerivedFromVersionID               xmpMM      string
  Description                        dc         lang-alt
  DeviceSettingDescription           exif       N
  DeviceSettingDescriptionColumns    exif       integer
  DeviceSettingDescriptionRows       exif       integer
  DeviceSettingDescriptionSettings   exif       string
  DigitalZoomRatio                   exif       rational
  DocumentID                         xmpMM      string
  ExifVersion                        exif       string
  Exposure                           crs        string
  ExposureCompensation               exif       rational
  ExposureIndex                      exif       rational
  ExposureMode                       exif       string
  ExposureProgram                    exif       string
  ExposureTime                       exif       rational
  FNumber                            exif       rational
  FileSource                         exif       string
  Flash                              exif       N
  FlashEnergy                        exif       rational
  FlashFired                         exif       boolean
  FlashFunction                      exif       boolean
  FlashMode                          exif       string
  FlashRedEyeMode                    exif       boolean
  FlashReturn                        exif       string
  FlashpixVersion                    exif       string
  FocalLength                        exif       rational
  FocalLengthIn35mmFormat            exif       integer
  FocalPlaneResolutionUnit           exif       string
  FocalPlaneXResolution              exif       rational
  FocalPlaneYResolution              exif       rational
  Format                             dc         string
  GPSAltitude                        exif       rational
  GPSAltitudeRef                     exif       string
  GPSAreaInformation                 exif       string
  GPSDestBearing                     exif       rational
  GPSDestBearingRef                  exif       string
  GPSDestDistance                    exif       rational
  GPSDestDistanceRef                 exif       string
  GPSDestLatitude                    exif       string
  GPSDestLongitude                   exif       string
  GPSDifferential                    exif       string
  GPSImgDirection                    exif       rational
  GPSImgDirectionRef                 exif       string
  GPSLatitude                        exif       string
  GPSLongitude                       exif       string
  GPSMapDatum                        exif       string
  GPSProcessingMethod                exif       string
  GPSSatellites                      exif       string
  GPSSpeed                           exif       rational
  GPSSpeedRef                        exif       string
  GPSStatus                          exif       string
  GPSTimeStamp                       exif       date
  GPSTrack                           exif       rational
  GPSTrackRef                        exif       string
  GPSVersionID                       exif       string
  GainControl                        exif       string
  GreenHue                           crs        string
  GreenSaturation                    crs        string
  Headline                           photoshop  string
  History                            xmpMM      N
  HistoryAction                      xmpMM      string
  HistoryInstanceID                  xmpMM      string
  HistoryParameters                  xmpMM      string
  HistorySoftwareAgent               xmpMM      string
  HistoryWhen                        xmpMM      date
  ISO                                exif       integer
  Identifier                         dc         string
  Identifier                         xmp        string
  ImageDescription                   tiff       lang-alt
  ImageHeight                        tiff       integer
  ImageUniqueID                      exif       string
  ImageWidth                         tiff       integer
  Instructions                       photoshop  string
  IntellectualGenre                  iptcCore   string
  JobRef                             xmpBJ      N
  JobRefId                           xmpBJ      string
  JobRefName                         xmpBJ      string
  JobRefUrl                          xmpBJ      string
  Keywords                           pdf        string
  Language                           dc         string
  LastURL                            xmpMM      string
  Lens                               aux        string
  LightSource                        exif       string
  Location                           iptcCore   string
  LuminanceSmoothing                 crs        string
  Make                               tiff       string
  MakerNote                          exif       string
  ManageTo                           xmpMM      string
  ManageUI                           xmpMM      string
  ManagedFrom                        xmpMM      N
  ManagedFromDocumentID              xmpMM      string
  ManagedFromInstanceID              xmpMM      string
  ManagedFromManageTo                xmpMM      string
  ManagedFromManageUI                xmpMM      string
  ManagedFromManager                 xmpMM      string
  ManagedFromManagerVariant          xmpMM      string
  ManagedFromRenditionClass          xmpMM      string
  ManagedFromRenditionParams         xmpMM      string
  ManagedFromVersionID               xmpMM      string
  Manager                            xmpMM      string
  ManagerVariant                     xmpMM      string
  Marked                             xmpRights  boolean
  MaxApertureValue                   exif       rational
  MetadataDate                       xmp        date
  MeteringMode                       exif       string
  ModDate                            pdf        date
  Model                              tiff       string
  ModifyDate                         xmp        date
  Nickname                           xmp        string
  Opto-ElectricConvFactor            exif       N
  OECFColumns                        exif       integer
  OECFNames                          exif       string
  OECFRows                           exif       integer
  OECFValues                         exif       rational
  Orientation                        tiff       string
  Owner                              xmpRights  string
  PDFVersion                         pdf        string
  PhotometricInterpretation          tiff       string
  ExifImageWidth                     exif       integer
  ExifImageHeight                    exif       integer
  PlanarConfiguration                tiff       string
  PrimaryChromaticities              tiff       rational
  Producer                           pdf        string
  Publisher                          dc         string
  RawFileName                        crs        string
  RedHue                             crs        string
  RedSaturation                      crs        string
  ReferenceBlackWhite                tiff       rational
  RelatedSoundFile                   exif       string
  Relation                           dc         string
  RenditionClass                     xmpMM      string
  RenditionOf                        xmpMM      N
  RenditionOfDocumentID              xmpMM      string
  RenditionOfInstanceID              xmpMM      string
  RenditionOfManageTo                xmpMM      string
  RenditionOfManageUI                xmpMM      string
  RenditionOfManager                 xmpMM      string
  RenditionOfManagerVariant          xmpMM      string
  RenditionOfRenditionClass          xmpMM      string
  RenditionOfRenditionParams         xmpMM      string
  RenditionOfVersionID               xmpMM      string
  RenditionParams                    xmpMM      string
  ResolutionUnit                     tiff       string
  Rights                             dc         lang-alt
  SamplesPerPixel                    tiff       integer
  Saturation                         crs        string
  Saturation                         exif       string
  SaveID                             xmpMM      integer
  Scene                              iptcCore   string
  SceneCaptureType                   exif       string
  SceneType                          exif       string
  SensingMethod                      exif       string
  SerialNumber                       aux        string
  ShadowTint                         crs        string
  Shadows                            crs        string
  Sharpness                          crs        string
  Sharpness                          exif       string
  ShutterSpeedValue                  exif       rational
  Software                           tiff       string
  Source                             dc         string
  Source                             photoshop  string
  SpatialFrequencyResponse           exif       N
  SpatialFrequencyResponseColumns    exif       integer
  SpatialFrequencyResponseNames      exif       string
  SpatialFrequencyResponseRows       exif       integer
  SpatialFrequencyResponseValues     exif       rational
  SpectralSensitivity                exif       string
  State                              photoshop  string
  Subject                            dc         string
  SubjectArea                        exif       integer
  SubjectCode                        iptcCore   string
  SubjectDistance                    exif       rational
  SubjectDistanceRange               exif       string
  SubjectLocation                    exif       integer
  SupplementalCategories             photoshop  string
  Thumbnails                         xmp        N
  ThumbnailsFormat                   xmp        string
  ThumbnailsHeight                   xmp        string
  ThumbnailsImage                    xmp        N
  ThumbnailsWidth                    xmp        string
  Title                              dc         lang-alt
  TransferFunction                   tiff       integer
  TransmissionReference              photoshop  string
  Type                               dc         string
  Urgency                            photoshop  integer
  UsageTerms                         xmpRights  lang-alt
  UserComment                        exif       lang-alt
  Version                            crs        string
  VersionID                          xmpMM      string
  Versions                           xmpMM      N
  VersionsComments                   xmpMM      string
  VersionsEvent                      xmpMM      N
  VersionsEventAction                xmpMM      string
  VersionsEventInstanceID            xmpMM      string
  VersionsEventParameters            xmpMM      string
  VersionsEventSoftwareAgent         xmpMM      string
  VersionsEventWhen                  xmpMM      date
  VersionsModifier                   xmpMM      string
  VersionsModifyDate                 xmpMM      date
  VersionsVersion                    xmpMM      string
  VignetteAmount                     crs        string
  VignetteMidpoint                   crs        string
  WebStatement                       xmpRights  string
  WhiteBalance                       crs        string
  WhiteBalance                       exif       string
  WhitePoint                         tiff       rational
  XResolution                        tiff       rational
  YCbCrCoefficients                  tiff       rational
  YCbCrSubSampling                   tiff       string
  YResolution                        tiff       rational

=head2 IPTC Tags

The IPTC specification dictates a length for ASCII (C<string> or C<digits>)
values.  These lengths are given in square brackets after the B<Writable>
format name.  For tags where a range of lengths is allowed, the minimum and
maximum lengths are separated by a comma within the brackets.  IPTC strings
are not null terminated.

IPTC information is separated into different records, each of which has its
own set of tags.

  Record   Tag Name                             Writable
  ------   --------                             --------
      1    IPTCEnvelope                         IPTC EnvelopeRecord
      2    IPTCApplication                      IPTC ApplicationRecord
      3    IPTCNewsPhoto                        IPTC NewsPhoto
      7    IPTCPreObjectData                    IPTC PreObjectData
      8    IPTCObjectData                       IPTC ObjectData
      9    IPTCPostObjectData                   IPTC PostObjectData

=head2 IPTC EnvelopeRecord Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
      0    EnvelopeRecordVersion                int16u
      5    Destination                          string[0,1024]
     20    FileFormat                           int16u
     22    FileVersion                          int16u
     30    ServiceIdentifier                    string[0,10]
     40    EnvelopeNumber                       digits[8]
     50    ProductID                            string[0,32]
     60    EnvelopePriority                     digits[1]
     70    DateSent                             digits[8]
     80    TimeSent                             string[11]
     90    CodedCharacterSet                    string[0,32]
    100    UniqueObjectName                     string[14,80]
    120    ARMIdentifier                        int16u
    122    ARMVersion                           int16u

=head2 IPTC ApplicationRecord Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
      0    ApplicationRecordVersion             int16u
      3    ObjectTypeReference                  string[3,67]
      4    ObjectAttributeReference             string[4,68]
      5    ObjectName                           string[0,64]
      7    EditStatus                           string[0,64]
      8    EditorialUpdate                      digits[2]
     10    Urgency                              digits[1]
     12    SubjectReference                     string[13,236]
     15    Category                             string[0,3]
     20    SupplementalCategories               string[0,32]
     22    FixtureIdentifier                    string[0,32]
     25    Keywords                             string[0,64]
     26    ContentLocationCode                  string[3]
     27    ContentLocationName                  string[0,64]
     30    ReleaseDate                          digits[8]
     35    ReleaseTime                          string[11]
     37    ExpirationDate                       digits[8]
     38    ExpirationTime                       string[11]
     40    SpecialInstructions                  string[0,256]
     42    ActionAdvised                        digits[2]
     45    ReferenceService                     string[0,10]
     47    ReferenceDate                        digits[8]
     50    ReferenceNumber                      digits[8]
     55    DateCreated                          digits[8]
     60    TimeCreated                          string[11]
     62    DigitalCreationDate                  digits[8]
     63    DigitalCreationTime                  string[11]
     65    OriginatingProgram                   string[0,32]
     70    ProgramVersion                       string[0,10]
     75    ObjectCycle                          string[1]
     80    By-line                              string[0,32]
     85    By-lineTitle                         string[0,32]
     90    City                                 string[0,32]
     92    Sub-location                         string[0,32]
     95    Province-State                       string[0,32]
    100    Country-PrimaryLocationCode          string[3]
    101    Country-PrimaryLocationName          string[0,64]
    103    OriginalTransmissionReference        string[0,32]
    105    Headline                             string[0,256]
    110    Credit                               string[0,32]
    115    Source                               string[0,32]
    116    CopyrightNotice                      string[0,128]
    118    Contact                              string[0,128]
    120    Caption-Abstract                     string[0,2000]
    121    LocalCaption                         string[0,256]
    122    Writer-Editor                        string[0,32]
    125    RasterizedCaption                    string[7360]
    130    ImageType                            string[2]
    131    ImageOrientation                     string[1]
    135    LanguageIdentifier                   string[2,3]
    150    AudioType                            string[2]
    151    AudioSamplingRate                    digits[6]
    152    AudioSamplingResolution              digits[2]
    153    AudioDuration                        digits[6]
    154    AudioOutcue                          string[0,64]
    184    JobID                                string[0,64]
    185    MasterDocumentID                     string[0,256]
    186    ShortDocumentID                      string[0,64]
    187    UniqueDocumentID                     string[0,128]
    188    OwnerID                              string[0,128]
    200    ObjectPreviewFileFormat              int16u
    201    ObjectPreviewFileVersion             int16u
    202    ObjectPreviewData                    string[0,256000]
    225    ClassifyState                        string[0,64]
    228    SimilarityIndex                      string[0,32]
    230    DocumentNotes                        string[0,1024]
    231    DocumentHistory                      string[0,256]
    232    ExifCameraInfo                       string[0,4096]

=head2 IPTC NewsPhoto Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
      0    NewsPhotoVersion                     int16u
     10    IPTCPictureNumber                    string[16]
     20    IPTCImageWidth                       int16u
     30    IPTCImageHeight                      int16u
     40    IPTCPixelWidth                       int16u
     50    IPTCPixelHeight                      int16u
     55    SupplementalType                     int8u
     60    ColorRepresentation                  int16u
     64    InterchangeColorSpace                int8u
     65    ColorSequence                        int8u
     66    ICCProfile                           N
     70    ColorCalibrationMatrix               N
     80    LookupTable                          N
     84    NumIndexEntries                      int16u
     85    ColorPalette                         N
     86    IPTCBitsPerSample                    int8u
     90    SampleStructure                      int8u
    100    ScanningDirection                    int8u
    102    IPTCImageRotation                    int8u
    110    DataCompressionMethod                int32u
    120    QuantizationMethod                   int8u
    125    EndPoints                            N
    130    ExcursionTolerance                   int8u
    135    BitsPerComponent                     int8u
    140    MaximumDensityRange                  int16u
    145    GammaCompensatedValue                int16u

=head2 IPTC PreObjectData Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
     10    SizeMode                             N
     20    MaxSubfileSize                       N
     90    ObjectSizeAnnounced                  N
     95    MaximumObjectSize                    N

=head2 IPTC ObjectData Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
     10    SubFile                              N

=head2 IPTC PostObjectData Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
     10    ConfirmedObjectSize                  N

=head2 ICC_Profile Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  'A2B0'   AToB0                                N
  'A2B1'   AToB1                                N
  'A2B2'   AToB2                                N
  'B2A0'   BToA0                                N
  'B2A1'   BToA1                                N
  'B2A2'   BToA2                                N
  'Header' ProfileHeader                        ICC_Profile Header
  'bTRC'   BlueTRC                              N
  'bXYZ'   BlueMatrixColumn                     N
  'bfd '   UCRBG                                N
  'bkpt'   MediaBlackPoint                      N
  'calt'   CalibrationDateTime                  N
  'chad'   ChromaticAdaptation                  N
  'chrm'   Chromaticity                         ICC_Profile Chromaticity
  'clro'   ColorantOrder                        N
  'clrt'   ColorantTable                        ICC_Profile ColorantTable
  'cprt'   Copyright                            N
  'crdi'   CRDInfo                              N
  'desc'   ProfileDescription                   N
  'devs'   DeviceSettings                       N
  'dmdd'   DeviceModelDesc                      N
  'dmnd'   DeviceMfgDesc                        N
  'dscm'   ProfileDescriptionML                 N
  'gTRC'   GreenTRC                             N
  'gXYZ'   GreenMatrixColumn                    N
  'gamt'   Gamut                                N
  'kTRC'   GrayTRC                              N
  'lumi'   Luminance                            N
  'meas'   Measurement                          ICC_Profile Measurement
  'mmod'   MakeAndModel                         N
  'ncl2'   NamedColor2                          N
  'ncol'   NamedColor                           N
  'ndin'   NativeDisplayInfo                    N
  'pre0'   Preview0                             N
  'pre1'   Preview1                             N
  'pre2'   Preview2                             N
  'ps2i'   PS2RenteringIntent                   N
  'ps2s'   PostScript2CSA                       N
  'psd0'   PostScript2CRD0                      N
  'psd1'   PostScript2CRD1                      N
  'psd2'   PostScript2CRD2                      N
  'pseq'   ProfileSequenceDesc                  N
  'psvm'   PS2CRDVMSize                         N
  'rTRC'   RedTRC                               N
  'rXYZ'   RedMatrixColumn                      N
  'resp'   OutputResponse                       N
  'scrd'   ScreeningDesc                        N
  'scrn'   Screening                            N
  'targ'   CharTarget                           N
  'tech'   Technology                           N
  'vcgt'   VideoCardGamma                       N
  'view'   ViewingConditions                    ICC_Profile ViewingConditions
  'vued'   ViewingCondDesc                      N
  'wtpt'   MediaWhitePoint                      N

=head2 ICC_Profile Header Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      4    ProfileCMMType                       N
      8    ProfileVersion                       N
     12    ProfileClass                         N
     16    ColorSpaceData                       N
     20    ProfileConnectionSpace               N
     24    ProfileDateTime                      N
     36    ProfileFileSignature                 N
     40    PrimaryPlatform                      N
     44    CMMFlags                             N
     48    DeviceManufacturer                   N
     52    DeviceModel                          N
     56    DeviceAttributes                     N
     64    RenderingIntent                      N
     68    ProfileConnectionSpace               N
     80    ProfileCreator                       N
     84    ProfileID                            N

=head2 ICC_Profile Chromaticity Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      8    ChromaticityChannels                 N
     10    ChromaticityColorant                 N
     12    ChromaticityChannel1                 N
     20    ChromaticityChannel2                 N
     28    ChromaticityChannel3                 N
     36    ChromaticityChannel4                 N

=head2 ICC_Profile ColorantTable Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      8    ColorantCount                        N
     12    Colorant1Name                        N
     44    Colorant1Coordinates                 N
     50    Colorant2Name                        N
     82    Colorant2Coordinates                 N
     88    Colorant3Name                        N
    120    Colorant3Coordinates                 N

=head2 ICC_Profile Measurement Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      8    MeasurementObserver                  N
     12    MeasurementBacking                   N
     24    MeasurementGeometry                  N
     28    MeasurementFlare                     N
     32    MeasurementIlluminant                N

=head2 ICC_Profile ViewingConditions Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      8    ViewingCondIlluminant                N
     20    ViewingCondSurround                  N
     32    ViewingCondIlluminantType            N

=head2 GPS Tags

ExifTool is very flexible about the input format for lat/long coordinates,
and will accept 3 floating point numbers (for degrees, minutes and seconds)
separated by just about anything.  Many other GPS tags have values which are
fixed-length strings.  For these, the indicated string lengths include a
null terminator which is added automatically by ExifTool.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   GPSVersionID                         int8u[4]
  0x0001   GPSLatitudeRef                       string[2]
  0x0002   GPSLatitude                          rational32u[3]
  0x0003   GPSLongitudeRef                      string[2]
  0x0004   GPSLongitude                         rational32u[3]
  0x0005   GPSAltitudeRef                       int8u
  0x0006   GPSAltitude                          rational32u
  0x0007   GPSTimeStamp                         rational32u[3]
  0x0008   GPSSatellites                        string
  0x0009   GPSStatus                            string[2]
  0x000a   GPSMeasureMode                       string[2]
  0x000b   GPSDOP                               rational32u
  0x000c   GPSSpeedRef                          string[2]
  0x000d   GPSSpeed                             rational32u
  0x000e   GPSTrackRef                          string[2]
  0x000f   GPSTrack                             rational32u
  0x0010   GPSImgDirectionRef                   string[2]
  0x0011   GPSImgDirection                      rational32u
  0x0012   GPSMapDatum                          string
  0x0013   GPSDestLatitudeRef                   string[2]
  0x0014   GPSDestLatitude                      rational32u[3]
  0x0015   GPSDestLongitudeRef                  string[2]
  0x0016   GPSDestLongitude                     rational32u[3]
  0x0017   GPSDestBearingRef                    string[2]
  0x0018   GPSDestBearing                       rational32u
  0x0019   GPSDestDistanceRef                   string[2]
  0x001a   GPSDestDistance                      rational32u
  0x001b   GPSProcessingMethod                  undef
  0x001c   GPSAreaInformation                   undef
  0x001d   GPSDateStamp                         string[11]
  0x001e   GPSDifferential                      int16u

=head2 Canon Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0001   CanonCameraSettings                  Canon CameraSettings
  0x0002   CanonFocalLength                     Canon FocalLength
  0x0004   CanonShotInfo                        Canon ShotInfo
  0x0006   CanonImageType                       string
  0x0007   CanonFirmwareVersion                 string
  0x0008   FileNumber                           int32u
  0x0009   OwnerName                            string
  0x000a   CanonColorInfoD30                    Canon ColorInfoD30
  0x000c   SerialNumber                         int32u
  0x000e   CanonFileLength                      int32u
  0x000f   CanonCustomFunctions10D              CanonCustom Functions10D
           CanonCustomFunctions20D              CanonCustom Functions20D
           CanonCustomFunctionsD30              CanonCustom FunctionsD30
  0x0012   CanonPictureInfo                     Canon PictureInfo
  0x0090   CanonCustomFunctions1D               CanonCustom Functions1D
  0x0093   CanonFileInfo                        Canon FileInfo
  0x00a0   CanonColorInfo                       Canon ColorInfo
  0x00a9   WhiteBalanceTable                    Canon WhiteBalance
  0x00ae   ColorTemperature                     int16u
  0x00b6   PreviewImageInfo                     Canon PreviewImageInfo

=head2 Canon CameraSettings Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      1    MacroMode                            int16s
      2    Self-timer                           int16s
      3    Quality                              int16s
      4    CanonFlashMode                       int16s
      5    ContinuousDrive                      int16s
      7    FocusMode                            int16s
     10    CanonImageSize                       int16s
     11    EasyMode                             int16s
     12    DigitalZoom                          int16s
     13    Contrast                             int16s
     14    Saturation                           int16s
     15    Sharpness                            int16s
     16    CameraISO                            int16s
     17    MeteringMode                         int16s
     18    FocusType                            int16s
     19    AFPoint                              int16s
     20    CanonExposureMode                    int16s
     22    LensType                             int16s
     23    LongFocal                            int16s
     24    ShortFocal                           int16s
     25    FocalUnits                           int16s
     28    FlashActivity                        int16s
     29    FlashBits                            int16s~
     32    FocusContinuous                      int16s
     36    ZoomedResolution                     int16s
     37    ZoomedResolutionBase                 int16s
     42    ColorTone                            int16s

=head2 Canon FocalLength Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      1    FocalLength                          int16u
      2    FocalPlaneXSize                      int16u
      3    FocalPlaneYSize                      int16u

=head2 Canon ShotInfo Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      2    ISO                                  int16s
      6    ExposureCompensation                 int16s
      7    WhiteBalance                         int16s
      9    SequenceNumber                       int16s
     14    IxusAFPoint                          int16s
     15    FlashExposureComp                    int16s
     16    AutoExposureBracketing               int16s
     17    AEBBracketValue                      int16s
     19    FocusDistanceUpper                   int16s
     20    FocusDistanceLower                   int16s
     21    FNumber                              int16s
     22    ExposureTime                         int16s
     24    BulbDuration                         int32s
     27    AutoRotate                           int16s
     29    Self-timer2                          int16s

=head2 Canon ColorInfoD30 Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      9    ColorTemperature                     int16s
     10    ColorMatrix                          int16s

=head2 CanonCustom Functions10D Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0001   SetButtonFunction                    int8u
  0x0002   ShutterReleaseNoCFCard               int8u
  0x0003   FlashSyncSpeedAv                     int8u
  0x0004   Shutter-AELock                       int8u
  0x0005   AFAssist                             int8u
  0x0006   ExposureLevelIncrements              int8u
  0x0007   AFPointRegistration                  int8u
  0x0008   RawAndJpgRecording                   int8u
  0x0009   AEBSequence                          int8u
  0x000a   SuperimposedDisplay                  int8u
  0x000b   MenuButtonDisplayPosition            int8u
  0x000c   MirrorLockup                         int8u
  0x000d   AssistButtonFunction                 int8u
  0x000e   FillFlashAutoReduction               int8u
  0x000f   ShutterCurtainSync                   int8u
  0x0010   SafetyShiftInAvOrTv                  int8u
  0x0011   LensAFStopButton                     int8u

=head2 CanonCustom Functions20D Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   SetFunctionWhenShooting              int8u
  0x0001   LongExposureNoiseReduction           int8u
  0x0002   FlashSyncSpeedAv                     int8u
  0x0003   Shutter-AELock                       int8u
  0x0004   AFAssistBeam                         int8u
  0x0005   ExposureLevelIncrements              int8u
  0x0006   FlashFiring                          int8u
  0x0007   ISOExpansion                         int8u
  0x0008   AEBSequence                          int8u
  0x0009   SuperimposedDisplay                  int8u
  0x000a   MenuButtonDisplayPosition            int8u
  0x000b   MirrorLockup                         int8u
  0x000c   AFPointSelectionMethod               int8u
  0x000d   ETTLII                               int8u
  0x000e   ShutterCurtainSync                   int8u
  0x000f   SafetyShiftInAVorTV                  int8u
  0x0010   LensAFStopButton                     int8u
  0x0011   AddOriginalDecisionData              int8u

=head2 CanonCustom FunctionsD30 Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0001   LongExposureNoiseReduction           int8u
  0x0002   Shutter-AELock                       int8u
  0x0003   MirrorLockup                         int8u
  0x0004   ExposureLevelIncrements              int8u
  0x0005   AFAssist                             int8u
  0x0006   FlashSyncSpeedAv                     int8u
  0x0007   AEBSequence                          int8u
  0x0008   ShutterCurtainSync                   int8u
  0x0009   LensAFStopButton                     int8u
  0x000a   FillFlashAutoReduction               int8u
  0x000b   MenuButtonReturn                     int8u
  0x000c   SetButtonFunction                    int8u
  0x000d   SensorCleaning                       int8u
  0x000e   SuperimposedDisplay                  int8u
  0x000f   ShutterReleaseNoCFCard               int8u

=head2 Canon PictureInfo Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      2    CanonImageWidth                      int16u
      3    CanonImageHeight                     int16u
      4    CanonImageWidthAsShot                int16u
      5    CanonImageHeightAsShot               int16u
     22    AFPointsUsed                         int16u~

=head2 CanonCustom Functions1D Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   FocusingScreen                       int8u
  0x0001   FinderDisplayDuringExposure          int8u
  0x0002   ShutterReleaseNoCFCard               int8u
  0x0003   ISOSpeedExpansion                    int8u
  0x0004   ShutterAELButton                     int8u
  0x0005   ManualTv                             int8u
  0x0006   ExposureLevelIncrements              int8u
  0x0007   USMLensElectronicMF                  int8u
  0x0008   LCDPanels                            int8u
  0x0009   AEBSequence                          int8u
  0x000a   AFPointIllumination                  int8u
  0x000b   AFPointSelection                     int8u
  0x000c   MirrorLockup                         int8u
  0x000d   AFPointSpotMetering                  int8u
  0x000e   FillFlashAutoReduction               int8u
  0x000f   ShutterCurtainSync                   int8u
  0x0010   SafetyShiftInAvOrTv                  int8u
  0x0011   AFPointActivationArea                int8u
  0x0012   SwitchToRegisteredAFPoint            int8u
  0x0013   LensAFStopButton                     int8u
  0x0014   AIServoTrackingSensitivity           int8u

=head2 Canon FileInfo Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      1    FileNumber                           int32u
           ShutterCount                         int32u

=head2 Canon ColorInfo Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      9    ColorTemperature                     int16s

=head2 Canon WhiteBalance Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    RedBalanceAuto                       N
      1    BlueBalanceAuto                      N
      2    RedBalanceDaylight                   N
      3    BlueBalanceDaylight                  N
      4    RedBalanceCloudy                     N
      5    BlueBalanceCloudy                    N
      6    RedBalanceTungsten                   N
      7    BlueBalanceTungsten                  N
      8    RedBalanceFluorescent                N
      9    BlueBalanceFluorescent               N
     10    RedBalanceFlash                      N
     11    BlueBalanceFlash                     N
     12    RedBalanceCustom                     N
     13    BlueBalanceCustom                    N
     14    RedBalanceB&W                        N
     15    BlueBalanceB&W                       N
     16    RedBalanceShade                      N
     17    BlueBalanceShade                     N

=head2 Canon PreviewImageInfo Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      2    PreviewImageLength                   int32u*
      3    PreviewImageWidth                    int32u
      4    PreviewImageHeight                   int32u
      5    PreviewImageStart                    int32u*
      6    PreviewFocalPlaneXResolution         rational32s
      8    PreviewFocalPlaneYResolution         rational32s

=head2 Casio Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0001   RecordingMode                        int16u
  0x0002   Quality                              int16u
  0x0003   FocusMode                            int16u
  0x0004   FlashMode                            int16u
  0x0005   FlashIntensity                       int16u
  0x0006   ObjectDistance                       int32u
  0x0007   WhiteBalance                         int16u
  0x000a   DigitalZoom                          int32u
  0x000b   Sharpness                            int16u
  0x000c   Contrast                             int16u
  0x000d   Saturation                           int16u
  0x0014   CCDSensitivity                       int16u

=head2 Casio Type2 Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0002   PreviewImageSize                     int16u[2]~
  0x0003   PreviewImageLength                   int32u*
  0x0004   PreviewImageStart                    int32u*
  0x0008   QualityMode                          int16u
  0x0009   CasioImageSize                       int16u
  0x000d   FocusMode                            int16u
  0x0014   ISO                                  int16u
  0x0019   WhiteBalance                         int16u
  0x001d   FocalLength                          rational32u
  0x001f   Saturation                           int16u
  0x0020   Contrast                             int16u
  0x0021   Sharpness                            int16u
  0x0e00   PrintIM                              PrintIM
  0x2000   PreviewImage                         undef
  0x2011   WhiteBalanceBias                     int16u[2]
  0x2012   WhiteBalance                         int16u
  0x2022   ObjectDistance                       int32u~
  0x2034   FlashDistance                        int16u
  0x3000   RecordMode                           int16u
  0x3001   SelfTimer                            int16u
  0x3002   Quality                              int16u
  0x3003   FocusMode                            int16u
  0x3006   TimeZone                             string
  0x3007   BestshotMode                         int16u
  0x3014   CCDISOSensitivity                    int16u
  0x3015   ColorMode                            int16u
  0x3016   Enhancement                          int16u
  0x3017   Filter                               int16u

=head2 PrintIM Tags

The format of the PrintIM information is known, however no PrintIM tags have
been decoded.  Use the Unknown (-u) option to extract PrintIM information.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------

=head2 FujiFilm Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   Version                              undef
  0x1000   Quality                              string
  0x1001   Sharpness                            int16u
  0x1002   WhiteBalance                         int16u
  0x1003   Saturation                           int16u
  0x1004   Contrast                             int16u
  0x1010   FujiFlashMode                        int16u
  0x1011   FlashStrength                        rational32s
  0x1020   Macro                                int16u
  0x1021   FocusMode                            int16u
  0x1030   SlowSync                             int16u
  0x1031   PictureMode                          int16u
  0x1100   AutoBracketing                       int16u
  0x1300   BlurWarning                          int16u
  0x1301   FocusWarning                         int16u
  0x1302   ExposureWarning                      int16u

=head2 Kodak Tags

The Kodak maker notes aren't in standard IFD format, and the format varies
frequently with different models.  Some information has been decoded, but
much of the Kodak information remains unknown.

The table below contains the most common set of Kodak tags.  The following
Kodak camera models have been tested and found to use these tags:  CX6330,
CX7330, CX7430, CX7530, DC4800, DC4900, DX3500, DX3600, DX3900, DX4330,
DX4530, DX4900, DX6340, DX6440, DX6490, DX7440, DX7590, DX7630, LS420,
LS443, LS743 and LS753.

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    KodakModel                           string[8]
      9    Quality                              int8u
     10    BurstMode                            int8u
     12    KodakImageWidth                      int16u
     14    KodakImageHeight                     int16u
     16    Date                                 undef[4]
     20    Time                                 int8u[4]
     24    BurstMode2?                          int16u
     27    ShutterMode                          int8u
     28    MeteringMode                         int8u
     29    SequenceNumber                       int8u
     30    FNumber                              int16u
     32    ExposureTime                         int32u
     36    ExposureCompensation                 int16s
     38    VariousModes?                        int16u
     40    Distance1?                           int32u
     44    Distance2?                           int32u
     48    Distance3?                           int32u
     52    Distance4?                           int32u
     56    FocusMode                            int8u
     58    VariousModes2?                       int16u
     60    PanoramaMode?                        int16u
     62    SubjectDistance?                     int16u
     64    WhiteBalance                         int8u
     92    FlashMode                            int8u
     93    FlashFired                           int8u
     94    ISOSetting                           int16u
     96    ISO                                  int16u
     98    TotalZoom                            int16u
    100    DateTimeStamp                        int16u
    102    ColorMode                            int16u
    104    DigitalZoom                          int16u
    107    Sharpness                            int8s

=head2 Kodak Type2 Tags

These tags are used by the DC265 and DC290.

   Index   Tag Name                             Writable
   -----   --------                             --------
      8    KodakMaker                           string[32]
     40    KodakModel                           string[32]
    108    KodakImageWidth                      int32u
    112    KodakImageHeight                     int32u

=head2 Kodak Type3 Tags

These tags are used by the DC280, DC3400 and DC5000.

   Index   Tag Name                             Writable
   -----   --------                             --------
     12    Date                                 undef[4]
     16    Time                                 int8u[4]
     30    AnalogZoom                           int16u
     55    Sharpness                            int8s
     56    ExposureTime                         int32u
     60    FNumber                              int16u
     78    ISO                                  int16u

=head2 Kodak Type4 Tags

These tags are used by the DC200 and DC215.

   Index   Tag Name                             Writable
   -----   --------                             --------
     32    OriginalFileName                     string[12]

=head2 Kodak Type5 Tags

These tags are used by the CX4200, CX4230 and CX6200.

   Index   Tag Name                             Writable
   -----   --------                             --------
     20    ExposureTime                         int32u
     26    WhiteBalance                         int8u
     28    FNumber                              int16u
     30    ISO                                  int16u
     32    OpticalZoom                          int16u
     34    DigitalZoom                          int16u
     39    FlashMode                            int8u
     42    ImageRotated                         int8u
     43    Macro                                int8u

=head2 Kodak Type6 Tags

These tags are used by the DX3215 and DX3700.

   Index   Tag Name                             Writable
   -----   --------                             --------
     16    ExposureTime                         int32u
     20    ISOSetting?                          int32u
     24    FNumber                              int16u
     26    ISO                                  int16u
     28    OpticalZoom                          int16u
     30    DigitalZoom                          int16u
     34    Flash                                int16u

=head2 Kodak Unknown Tags

   Index   Tag Name                             Writable
   -----   --------                             --------

=head2 Unknown Tags

The following tags are decoded in unsupported maker notes.  Use the Unknown
(-u) option to display other unknown tags.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0e00   PrintIM                              PrintIM

=head2 Minolta Tags

These tags are used by Minolta and Konica/Minolta cameras.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   MakerNoteVersion                     Y
  0x0001   MinoltaCameraSettingsOld             Minolta CameraSettings
  0x0003   MinoltaCameraSettings                Minolta CameraSettings
  0x0018   ImageStabilization                   N
  0x0040   CompressedImageSize                  int32u
  0x0081   PreviewImageData                     N
  0x0088   PreviewImageStart                    int32u*
  0x0089   PreviewImageLength                   int32u*
  0x0101   ColorMode                            Y
  0x0102   MinoltaQuality                       Y
  0x0103   MinoltaQuality                       Y
  0x0e00   PrintIM                              PrintIM
  0x0f00   MinoltaCameraSettings2               N

=head2 Minolta CameraSettings Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      1    ExposureMode                         int32u
      2    FlashMode                            int32u
      3    WhiteBalance                         int32u~
      4    MinoltaImageSize                     int32u
      5    MinoltaQuality                       int32u
      6    DriveMode                            int32u
      7    MeteringMode                         int32u
      8    MinoltaISO                           int32u~
      9    MinoltaShutterSpeed                  int32u~
     10    MinoltaAperture                      int32u~
     11    MacroMode                            int32u
     12    DigitalZoom                          int32u
     13    ExposureCompensation                 int32u
     14    BracketStep                          int32u
     16    IntervalLength                       int32u
     17    IntervalNumber                       int32u
     18    FocalLength                          int32u
     19    FocusDistance                        int32u
     20    FlashFired                           int32u
     21    MinoltaDate                          int32u
     22    MinoltaTime                          int32u
     23    MaxAperture                          int32u~
     26    FileNumberMemory                     int32u
     27    LastFileNumber                       int32u
     28    ColorBalanceRed                      int32u
     29    ColorBalanceGreen                    int32u
     30    ColorBalanceBlue                     int32u
     31    Saturation                           int32u
     32    Contrast                             int32u
     33    Sharpness                            int32u
     34    SubjectProgram                       int32u
     35    FlashExposureComp                    int32u
     36    ISOSetting                           int32u
     37    MinoltaModel                         int32u
     38    IntervalMode                         int32u
     39    FolderName                           int32u
     40    ColorMode                            int32u
     41    ColorFilter                          int32u
     42    BWFilter                             int32u
     43    InternalFlash                        int32u
     44    Brightness                           int32u
     45    SpotFocusPointX                      int32u
     46    SpotFocusPointY                      int32u
     47    WideFocusZone                        int32u
     48    FocusMode                            int32u
     49    FocusArea                            int32u
     50    DECPosition                          int32u

=head2 Nikon Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0001   FileSystemVersion                    undef
  0x0002   ISO                                  int16u[2]
  0x0003   ColorMode                            Y
  0x0004   Quality                              Y
  0x0005   WhiteBalance                         Y
  0x0006   Sharpness                            Y
  0x0007   FocusMode                            Y
  0x0008   FlashSetting                         Y
  0x0009   FlashType                            Y
  0x000b   WhiteBalanceFineTune                 int16u
  0x000c   ColorBalance1                        Y
  0x000e   ExposureDifference                   undef[4]
  0x000f   ISOSelection                         Y
  0x0010   DataDump                             N
  0x0011   NikonPreview                         Nikon PreviewImage
  0x0012   FlashExposureComp                    int32s~
  0x0013   ISOSetting                           int16u[2]
  0x0016   ImageBoundary                        Y
  0x0018   FlashExposureBracketValue            int32s~
  0x0019   ExposureBracketValue                 rational32s~
  0x001d   SerialNumber                         N
  0x0080   ImageAdjustment                      Y
  0x0081   ToneComp                             Y
  0x0082   AuxiliaryLens                        Y
  0x0083   LensType                             int8u
  0x0084   Lens                                 rational32u[4]
  0x0085   ManualFocusDistance                  rational32u
  0x0086   DigitalZoom                          rational32u
  0x0087   FlashMode                            int8u
  0x0088   AFPoint                              int32u
  0x0089   ShootingMode                         int16u~
  0x008b   LensFStops                           undef[4]
  0x008c   NEFCurve1                            N
  0x008d   ColorHue                             Y
  0x008f   SceneMode                            Y
  0x0090   LightSource                          Y
  0x0092   HueAdjustment                        int16s
  0x0094   Saturation                           Y
  0x0095   NoiseReduction                       Y
  0x0096   NEFCurve2                            N
  0x0097   ColorBalance0100                     Nikon ColorBalance0100
           ColorBalance0102                     Nikon ColorBalance0102
           ColorBalance0103                     Nikon ColorBalance0103
           ColorBalanceUnknown
  0x0098   LensData0101                         Nikon LensData
           LensData0201                         Nikon LensData
           LensDataUnknown
  0x0099   NEFThumbnailSize                     int16u[2]
  0x00a0   SerialNumber                         Y
  0x00a7   ShutterCount                         N
  0x00a9   ImageOptimization                    Y
  0x00aa   Saturation                           Y
  0x00ab   VariProgram                          Y
  0x0e00   PrintIM                              PrintIM
  0x0e0e   NikonCaptureOffsets                  Nikon NikonCaptureOffsets

=head2 Nikon PreviewImage Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0103   Compression                          N
  0x011a   XResolution                          N
  0x011b   YResolution                          N
  0x0128   ResolutionUnit                       N
  0x0201   PreviewImageStart                    int32u*
  0x0202   PreviewImageLength                   int32u*
  0x0213   YCbCrPositioning                     N

=head2 Nikon ColorBalance0100 Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    RedBalance                           int16u
      1    BlueBalance                          int16u

=head2 Nikon ColorBalance0102 Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    RedBalance                           rational16s
      1    BlueBalance                          rational16s

=head2 Nikon ColorBalance0103 Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    RedBalance                           rational16s
      1    BlueBalance                          rational16s

=head2 Nikon LensData Tags

Nikon encrypts the LensData information below if LensDataVersion is 0201,
but  the decryption algorithm is known so the information can be extracted.
It isn't yet writable, however, because the encryption adds complications
which make writing more difficult.

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    LensDataVersion                      N
      5    AFAperture                           N
      8    FocusPosition                        N
      9    FocusDistance                        N
     10    FocalLength                          N
     11    LensID                               N
     12    LensFStops                           N
     13    MinFocalLength                       N
     14    MaxFocalLength                       N
     15    MaxApertureAtMinFocal                N
     16    MaxApertureAtMaxFocal                N
     17    MCUVersion                           N
     18    EffectiveMaxAperture                 N

=head2 Nikon NikonCaptureOffsets Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0001   IFD0_Offset                          N
  0x0002   PreviewIFD_Offset                    N
  0x0003   SubIFD_Offset                        N

=head2 Nikon MakerNotesB Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0003   Quality                              Y
  0x0004   ColorMode                            Y
  0x0005   ImageAdjustment                      Y
  0x0006   CCDSensitivity                       Y
  0x0007   WhiteBalance                         Y
  0x0008   Focus                                Y
  0x000a   DigitalZoom                          Y
  0x000b   Converter                            Y

=head2 Olympus Tags

Tags 0x0000 through 0x0103 are used by some older Olympus cameras, and are
the same as Konica/Minolta tags.  The Olympus tags are also used for Epson
and Agfa cameras.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   MakerNoteVersion                     Y
  0x0001   MinoltaCameraSettingsOld             Minolta CameraSettings
  0x0003   MinoltaCameraSettings                Minolta CameraSettings
  0x0040   CompressedImageSize                  int32u
  0x0081   PreviewImageData                     N
  0x0088   PreviewImageStart                    N*
  0x0089   PreviewImageLength                   N*
  0x0100   ThumbnailImage                       undef
  0x0101   ColorMode                            int16u
  0x0102   MinoltaQuality                       int16u
  0x0103   MinoltaQuality                       int16u
  0x0200   SpecialMode                          int32u[3]~
  0x0201   Quality                              int16u
  0x0202   Macro                                int16u
  0x0203   BWMode                               int16u
  0x0204   DigitalZoom                          rational32u
  0x0205   FocalPlaneDiagonal                   rational32u
  0x0207   FirmwareVersion                      string
  0x0208   PictureInfo                          string
  0x0209   CameraID                             string
  0x020b   EpsonImageWidth                      int16u
  0x020c   EpsonImageHeight                     int16u
  0x020d   EpsonSoftware                        Y
  0x0300   PreCaptureFrames                     Y
  0x0302   OneTouchWB                           int16u
  0x0e00   PrintIM                              PrintIM
  0x0f00   DataDump                             N
  0x0f01   DataDump2                            N
  0x1004   FlashMode                            int16u
  0x1005   FlashDevice                          int16u
  0x1006   Bracket                              Y
  0x100b   FocusMode                            Y
  0x100c   FocusDistance                        Y
  0x100d   Zoom                                 Y
  0x100e   MacroFocus                           Y
  0x100f   SharpnessFactor                      int16u
  0x1011   ColorMatrix                          int16u[6]
  0x1012   BlackLevel                           int16u[4]
  0x1015   WhiteBalance                         Y
  0x1017   RedBalance                           int16u[2]
  0x1018   BlueBalance                          int16u[2]
  0x101a   SerialNumber                         Y
  0x1023   FlashBias                            Y
  0x1029   Contrast                             int16u
  0x102a   SharpnessFactor                      int16u
  0x102b   ColorControl                         int16u[6]
  0x102c   ValidBits                            int16u[2]
  0x102d   CoringFilter                         int16u
  0x102e   OlympusImageWidth                    int32u
  0x102f   OlympusImageHeight                   int32u
  0x1034   CompressionRatio                     Y
  0x1035   PreviewImageValid                    int32u
  0x1036   PreviewImageStart                    int32u*
  0x1037   PreviewImageLength                   int32u*
  0x2010   Equipment                            Olympus Equipment
  0x2020   CameraSettings                       Olympus CameraSettings
  0x2030   RawDevelopment                       Olympus RawDevelopment
  0x2040   ImageProcessing                      Olympus ImageProcessing
  0x2050   FocusInfo                            Olympus FocusInfo

=head2 Olympus Equipment Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   EquipmentVersion                     undef[4]
  0x0100   FirmwareVersion2                     string[6]
  0x0101   SerialNumber                         string[32]
  0x0103   FocalPlaneDiagonal                   rational32u
  0x0104   BodyFirmwareVersion                  int32u
  0x0201   Lens                                 int8u[6]~
  0x0202   LensSerialNumber                     string[32]
  0x0204   LensFirmwareVersion                  int32u
  0x0206   MaxApertureAtMaxFocal                int16u
  0x0207   MinFocalLength                       int16u
  0x0208   MaxFocalLength                       int16u
  0x0301   Extender                             int8u[6]~
  0x0302   ExtenderSerialNumber                 string[32]
  0x0304   ExtenderFirmwareVersion              int32u
  0x1000   FlashType                            int16u
  0x1001   FlashModel                           int16u
  0x1003   FlashSerialNumber                    string[32]
  0x1004   FlashFirmwareVersion                 int32u

=head2 Olympus CameraSettings Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   CameraSettingsVersion                undef[4]
  0x0100   PreviewImageValid                    int32u
  0x0101   PreviewImageStart                    int32u*
  0x0102   PreviewImageLength                   int32u*
  0x0200   ExposureMode                         int16u
  0x0202   MeteringMode                         int16u
  0x0300   MacroMode                            int16u
  0x0301   FocusMode                            int16u
  0x0302   FocusProcess                         int16u
  0x0303   AFSearch                             int16u
  0x0304   AFAreas                              int32u[64]~
  0x0400   FlashMode                            int16u
  0x0401   FlashExposureCompensation            rational32s
  0x0501   WhiteBalanceTemperature              int16u
  0x0502   WhiteBalanceBracket                  int16s
  0x0503   CustomSaturation                     int16s[3]~
  0x0504   ModifiedSaturation                   int16u
  0x0505   ContrastSetting                      int16s[3]
  0x0506   SharpnessSetting                     int16s[3]
  0x0507   ColorSpace                           int16u
  0x0509   SceneMode                            int16u
  0x050a   NoiseReduction                       int16u
  0x050b   DistortionCorrection                 int16u
  0x050c   ShadingCompensation                  int16u
  0x050d   CompressionFactor                    rational32u
  0x050f   Gradation                            int16s
  0x0600   Sequence                             int16u[2]~
  0x0603   ImageQuality2                        int16u

=head2 Olympus RawDevelopment Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   RawDevVersion                        undef[4]
  0x0100   RawDevExposureBiasValue              rational32s
  0x0101   RawDevWhiteBalanceValue              int16u
  0x0102   RawDevWBFineAdjustment               int16s
  0x0103   RawDevGrayPoint                      int16u[3]
  0x0104   RawDevSaturationEmphasis             int16s[3]
  0x0105   RawDevMemoryColorEmphasis            int16u
  0x0106   RawDevContrastValue                  int16s[3]
  0x0107   RawDevSharpnessValue                 int16s[3]
  0x0108   RawDevColorSpace                     int16u
  0x0109   RawDevEngine                         int16u
  0x010a   RawDevNoiseReduction                 int16u
  0x010b   RawDevEditStatus                     int16u
  0x010c   RawDevSettings                       int16u

=head2 Olympus ImageProcessing Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   ImageProcessingVersion               undef[4]
  0x0100   RedBlueBias                          int16u[2]
  0x0200   ColorMatrix                          int16u[9]
  0x0300   SmoothingParameter1                  int16u
  0x0310   SmoothingParameter2                  int16u
  0x0600   SmoothingThresholds                  int16u[4]
  0x0610   SmoothingThreshold2                  int16u
  0x0611   ValidBits                            int16u[2]
  0x0614   OlympusImageWidth2                   int32u
  0x0615   OlympusImageHeight2                  int32u
  0x1010   NoiseFilter2                         int16u
  0x1012   ShadingCompensation2                 int16u

=head2 Olympus FocusInfo Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   FocusInfoVersion                     undef[4]
  0x0209   AutoFocus?                           int16u
  0x0300   ZoomPosition                         int16u
  0x0305   FocusDistance                        int32u[2]
  0x1201   ExternalFlash                        int16u[2]
  0x1208   InternalFlash                        int16u

=head2 Panasonic Tags

Panasonic tags are also used for Leica cameras.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0001   ImageQuality                         int16u
  0x0002   FirmwareVersion                      int8u[4]
  0x0003   WhiteBalance                         int16u
  0x0007   FocusMode                            int16u
  0x000f   SpotMode                             int8u[2]
  0x001a   ImageStabilizer                      int16u
  0x001c   MacroMode                            int16u
  0x001f   ShootingMode                         int16u
  0x0020   Audio                                int16u
  0x0021   DataDump                             N
  0x0023   WhiteBalanceBias                     int16s
  0x0024   FlashBias                            int16s
  0x0025   SerialNumber                         Y
  0x0028   ColorEffect                          int16u
  0x002c   Contrast                             int16u
  0x002d   NoiseReduction                       int16u
  0x0e00   PrintIM                              PrintIM

=head2 Pentax Tags

The Pentax tags are also used in Asahi cameras.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0001   PentaxMode                           int16u
  0x0002   PreviewImageSize                     int16u[2]~
  0x0003   PreviewImageLength                   int32u*
  0x0004   PreviewImageStart                    int32u*
  0x0006   Date                                 undef[4]
  0x0007   Time                                 undef[3]
  0x0008   Quality                              int16u
  0x0009   PentaxImageSize                      int16u
  0x000b   PictureMode                          int16u
  0x000c   FlashMode                            int16u
  0x000d   FocusMode                            int16u
  0x000f   AutoAFPoint                          int16u
  0x0010   FocusPosition                        int16u
  0x0012   ExposureTime                         int32u
  0x0013   FNumber                              int16u
  0x0014   ISO                                  int16u
  0x0016   ExposureCompensation                 int16u
  0x0017   MeteringMode                         int16u
  0x0019   WhiteBalance                         int16u
  0x001a   WhiteBalanceMode                     int16u
  0x001b   BlueBalance                          int16u
  0x001c   RedBalance                           int16u
  0x001d   FocalLength                          int32u
  0x001e   DigitalZoom                          int16u
  0x001f   Saturation                           int16u
  0x0020   Contrast                             int16u
  0x0021   Sharpness                            int16u
  0x0022   WorldTimeLocation                    int16u
  0x0023   HometownCity                         int16u
  0x0024   DestinationCity                      int16u
  0x0025   HometownDST                          int16u
  0x0026   DestinationDST                       int16u
  0x0029   FrameNumber                          int32u
  0x0039   RawImageSize                         int16u[2]~
  0x003f   LensType                             int8u[2]
  0x0200   BlackPoint                           int16u[4]
  0x0201   WhitePoint                           int16u[4]
  0x03fe   DataDump                             N
  0x0402   ToneCurve                            Y~
  0x0403   ToneCurves                           Y~
  0x0e00   PrintIM                              PrintIM
  0x1000   HometownCityCode                     undef[4]
  0x1001   DestinationCityCode                  undef[4]

=head2 Ricoh Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0001   MakerNoteType                        Y
  0x0002   MakerNoteVersion                     Y
  0x0e00   PrintIM                              PrintIM
  0x2001   RicohSubdir                          Ricoh Subdir
           RicohRR1Subdir                       Ricoh Subdir

=head2 Ricoh Subdir Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0004   RicohDateTime1                       N
  0x0005   RicohDateTime2                       N

=head2 Ricoh Text Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  'Bg'     BlueGain                             N
  'Gg'     GreenGain                            N
  'Rev'    Revision                             N
  'Rg'     RedGain                              N
  'Rv'     Revision                             N

=head2 Sanyo Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x00ff   MakerNoteOffset                      int32u
  0x0100   SanyoThumbnail                       Y
  0x0200   SpecialMode                          int32u[3]
  0x0201   SanyoQuality                         int16u
  0x0202   Macro                                int16u
  0x0204   DigitalZoom                          rational32u
  0x0207   SoftwareVersion                      Y
  0x0208   PictInfo                             Y
  0x0209   CameraID                             Y
  0x020e   SequentialShot                       int16u
  0x020f   WideRange                            int16u
  0x0210   ColorAdjustmentMode                  int16u
  0x0213   QuickShot                            int16u
  0x0214   SelfTimer                            int16u
  0x0216   VoiceMemo                            int16u
  0x0217   RecordShutterRelease                 int16u
  0x0218   FlickerReduce                        int16u
  0x0219   OpticalZoomOn                        int16u
  0x021b   DigitalZoomOn                        int16u
  0x021d   LightSourceSpecial                   int16u
  0x021e   Resaved                              int16u
  0x021f   SceneSelect                          int16u
  0x0223   ManualFocusDistance                  rational32u
  0x0224   SequenceShotInterval                 int16u
  0x0225   FlashMode                            int16u
  0x0e00   PrintIM                              PrintIM
  0x0f00   DataDump                             N

=head2 Sigma Tags

These tags are used in Sigma/Foveon cameras.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0002   SerialNumber                         Y
  0x0003   DriveMode                            Y
  0x0004   ResolutionMode                       Y
  0x0005   AFMode                               Y
  0x0006   FocusSetting                         Y
  0x0007   WhiteBalance                         Y
  0x0008   ExposureMode                         Y
  0x0009   MeteringMode                         Y
  0x000a   Lens                                 Y
  0x000b   ColorSpace                           Y
  0x000c   ExposureCompensation                 Y
  0x000d   Contrast                             Y
  0x000e   Shadow                               Y
  0x000f   Highlight                            Y
  0x0010   Saturation                           Y
  0x0011   Sharpness                            Y
  0x0012   X3FillLight                          Y
  0x0014   ColorAdjustment                      Y
  0x0015   AdjustmentMode                       Y
  0x0016   Quality                              Y
  0x0017   Firmware                             Y
  0x0018   Software                             Y
  0x0019   AutoBracket                          Y

=head2 Sony Tags

While current Sony camera models contain a wealth of information, very
little is known about the Sony tags.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0e00   PrintIM                              PrintIM

=head2 Kodak SpecialEffects Tags

The Kodak SpecialEffects and Borders tags are found in sub-IFD's within
the Kodak "Meta" JPEG APP3 segment.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   DigitalEffectsVersion                N
  0x0001   DigitalEffectsName                   N
  0x0002   DigitalEffectsType                   N

=head2 Kodak Borders Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   BordersVersion                       N
  0x0001   BorderName                           N
  0x0002   BorderID                             N
  0x0003   BorderLocation                       N
  0x0004   BorderType                           N
  0x0008   WatermarkType                        N

=head2 CanonRaw Tags

These tags apply to Canon CRW-format RAW files.  When writing CanonRaw
information, the length of the information is preserved (and the new
information is truncated or padded as required) unless B<Writable> is
C<resize>.  Currently, only JpgFromRaw and ThumbnailImage are allowed to
change size.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0000   NullRecord                           Y
  0x0001   FreeBytes                            Y
  0x0032   CanonColorInfo1                      N
  0x0805   CanonFileDescription                 Y
           UserComment                          Y
  0x080a   CanonRawMakeModel                    CanonRaw MakeModel
  0x080b   CanonFirmwareVersion                 Y
  0x080c   ComponentVersion                     Y
  0x080d   ROMOperationMode                     Y
  0x0810   OwnerName                            Y
  0x0815   CanonImageType                       Y
  0x0816   OriginalFileName                     Y
  0x0817   ThumbnailFileName                    Y
  0x100a   TargetImageType                      Y
  0x1010   ShutterReleaseMethod                 Y
  0x1011   ShutterReleaseTiming                 Y
  0x1016   ReleaseSetting                       Y
  0x101c   BaseISO                              Y
  0x1029   CanonFocalLength                     Canon FocalLength
  0x102a   CanonShotInfo                        Canon ShotInfo
  0x102c   CanonColorInfo2                      N
  0x102d   CanonCameraSettings                  Canon CameraSettings
  0x1031   SensorInfo                           CanonRaw SensorInfo
  0x1033   CanonCustomFunctions10D              CanonCustom Functions10D
           CanonCustomFunctions20D              CanonCustom Functions20D
           CanonCustomFunctionsD30              CanonCustom FunctionsD30
  0x1038   CanonPictureInfo                     Canon PictureInfo
  0x10a9   WhiteBalanceTable                    Canon WhiteBalance
  0x10ae   ColorTemperature                     Y
  0x10b4   ColorSpace                           Y
  0x1803   ImageFormat                          CanonRaw ImageFormat
  0x1804   RecordID                             Y
  0x1806   SelfTimerTime                        Y
  0x1807   TargetDistanceSetting                float
  0x180b   SerialNumber                         Y
  0x180e   TimeStamp                            CanonRaw TimeStamp
  0x1810   ImageInfo                            CanonRaw ImageInfo
  0x1813   FlashInfo                            CanonRaw FlashInfo
  0x1814   MeasuredEV                           float
  0x1817   FileNumber                           Y
  0x1818   ExposureInfo                         CanonRaw ExposureInfo
  0x1835   DecoderTable                         N
  0x2005   RawData                              N
  0x2007   JpgFromRaw                           resize
  0x2008   ThumbnailImage                       resize
  0x2804   ImageDescription                     CanonRaw
  0x2807   CameraObject                         CanonRaw
  0x3002   ShootingRecord                       CanonRaw
  0x3003   MeasuredInfo                         CanonRaw
  0x3004   CameraSpecification                  CanonRaw
  0x300a   ImageProps                           CanonRaw
  0x300b   ExifInformation                      CanonRaw

=head2 CanonRaw MakeModel Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    Make                                 string[6]
      6    Model                                string[$size-6]

=head2 CanonRaw SensorInfo Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      1    SensorWidth                          N
      2    SensorHeight                         N
      5    SensorLeftBorder                     N
      6    SensorTopBorder                      N
      7    SensorRightBorder                    N
      8    SensorBottomBorder                   N

=head2 CanonRaw ImageFormat Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    FileFormat                           int32u
      1    TargetCompressionRatio               float

=head2 CanonRaw TimeStamp Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    DateTimeOriginal                     int32u
      1    TimeZoneCode                         int32s
      2    TimeZoneInfo                         int32u

=head2 CanonRaw ImageInfo Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    ImageWidth                           N
      1    ImageHeight                          N
      2    PixelAspectRatio                     N
      3    Rotation                             N
      4    ComponentBitDepth                    N
      5    ColorBitDepth                        N
      6    ColorBW                              N

=head2 CanonRaw FlashInfo Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    FlashGuideNumber                     float
      1    FlashThreshold                       float

=head2 CanonRaw ExposureInfo Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    ExposureCompensation                 float
      1    TvValue                              float
      2    AvValue                              float

=head2 Photoshop Tags

Many Photoshop tags are marked as Unknown (indicated by a question mark
after the tag name) because the information they provide is not very useful
under normal circumstances.  Unknown tags are not extracted unless the
Unknown (-u) option is used.

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x03e8   Photoshop2Info?                      N
  0x03e9   MacintoshPrintInfo?                  N
  0x03ea   XMLData?                             N
  0x03eb   Photoshop2ColorTable?                N
  0x03ed   ResolutionInfo?                      N
  0x03ee   AlphaChannelsNames                   N
  0x03ef   DisplayInfo?                         N
  0x03f0   PStringCaption?                      N
  0x03f1   BorderInformation?                   N
  0x03f2   BackgroundColor?                     N
  0x03f3   PrintFlags?                          N
  0x03f4   BW_HalftoningInfo?                   N
  0x03f5   ColorHalftoningInfo?                 N
  0x03f6   DuotoneHalftoningInfo?               N
  0x03f7   BW_TransferFunc?                     N
  0x03f8   ColorTransferFuncs?                  N
  0x03f9   DuotoneTransferFuncs?                N
  0x03fa   DuotoneImageInfo?                    N
  0x03fb   EffectiveBW?                         N
  0x03fc   ObsoletePhotoshopTag1?               N
  0x03fd   EPSOptions?                          N
  0x03fe   QuickMaskInfo?                       N
  0x03ff   ObsoletePhotoshopTag2?               N
  0x0400   LayerStateInfo?                      N
  0x0401   WorkingPath?                         N
  0x0402   LayersGroupInfo?                     N
  0x0403   ObsoletePhotoshopTag3?               N
  0x0404   IPTCData                             IPTC
  0x0405   RawImageMode?                        N
  0x0406   JPEG_Quality                         Photoshop JPEG_Quality
  0x0408   GridGuidesInfo?                      N
  0x0409   ThumbnailResource?                   N
  0x040a   CopyrightFlag?                       N
  0x040b   URL                                  Y
  0x040c   PhotoshopThumbnail                   N
  0x040d   GlobalAngle?                         N
  0x040e   ColorSamplersResource?               N
  0x040f   ICC_Profile?                         N
  0x0410   Watermark?                           N
  0x0411   ICC_Untagged?                        N
  0x0412   EffectsVisible?                      N
  0x0413   SpotHalftone?                        N
  0x0414   IDsBaseValue?                        N
  0x0415   UnicodeAlphaNames?                   N
  0x0416   IndexedColourTableCount?             N
  0x0417   TransparentIndex?                    N
  0x0419   GlobalAltitude?                      N
  0x041a   Slices?                              N
  0x041b   WorkflowURL?                         N
  0x041c   JumpToXPEP?                          N
  0x041d   AlphaIdentifiers?                    N
  0x041e   URL_List?                            N
  0x0421   VersionInfo?                         N
  0x0bb7   ClippingPathName?                    N
  0x2710   PrintFlagsInfo?                      N

=head2 Photoshop JPEG_Quality Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    PhotoshopQuality                     N
      1    PhotoshopFormat                      N
      2    ProgressiveScans                     N

=head2 GeoTiff Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  0x0001   GeoTiffVersion                       N
  0x0400   GTModelType                          N
  0x0401   GTRasterType                         N
  0x0402   GTCitation                           N
  0x0800   GeographicType                       N
  0x0801   GeogCitation                         N
  0x0802   GeogGeodeticDatum                    N
  0x0803   GeogPrimeMeridian                    N
  0x0804   GeogLinearUnits                      N
  0x0805   GeogLinearUnitSize                   N
  0x0806   GeogAngularUnits                     N
  0x0807   GeogAngularUnitSize                  N
  0x0808   GeogEllipsoid                        N
  0x0809   GeogSemiMajorAxis                    N
  0x080a   GeogSemiMinorAxis                    N
  0x080b   GeogInvFlattening                    N
  0x080c   GeogAzimuthUnits                     N
  0x080d   GeogPrimeMeridianLong                N
  0x0c00   ProjectedCSType                      N
  0x0c01   PCSCitation                          N
  0x0c02   Projection                           N
  0x0c03   ProjCoordTrans                       N
  0x0c04   ProjLinearUnits                      N
  0x0c05   ProjLinearUnitSize                   N
  0x0c06   ProjStdParallel1                     N
  0x0c07   ProjStdParallel2                     N
  0x0c08   ProjNatOriginLong                    N
  0x0c09   ProjNatOriginLat                     N
  0x0c0a   ProjFalseEasting                     N
  0x0c0b   ProjFalseNorthing                    N
  0x0c0c   ProjFalseOriginLong                  N
  0x0c0d   ProjFalseOriginLat                   N
  0x0c0e   ProjFalseOriginEasting               N
  0x0c0f   ProjFalseOriginNorthing              N
  0x0c10   ProjCenterLong                       N
  0x0c11   ProjCenterLat                        N
  0x0c12   ProjCenterEasting                    N
  0x0c13   ProjCenterNorthing                   N
  0x0c14   ProjScaleAtNatOrigin                 N
  0x0c15   ProjScaleAtCenter                    N
  0x0c16   ProjAzimuthAngle                     N
  0x0c17   ProjStraightVertPoleLong             N
  0x0c18   ProjRectifiedGridAngle               N
  0x1000   VerticalCSType                       N
  0x1001   VerticalCitation                     N
  0x1002   VerticalDatum                        N
  0x1003   VerticalUnits                        N

=head2 Jpeg2000 Tags

  Tag ID   Tag Name                             Writable
  ------   --------                             --------
  'asoc'   Association                          N
  'bfil'   BinaryFilter                         N
  'bpcc'   BitsPerComponent                     N
  'cdef'   ComponentDefinition                  N
  'cgrp'   ColorGroup                           N
  'chck'   DigitalSignature                     N
  'cmap'   ComponentMapping                     N
  'colr'   ColorSpecification                   ICC_Profile
  'comp'   Composition                          N
  'copt'   CompositionOptions                   N
  'cref'   Cross-Reference                      N
  'creg'   CodestreamRegistration               N
  'drep'   DesiredReproductions                 N
  'dtbl'   DataReference                        N
  'flst'   FragmentList                         N
  'free'   Free                                 N
  'ftbl'   FragmentTable                        N
  'ftyp'   FileType                             N
  'gtso'   GraphicsTechnologyStandardOutput     N
  'ihdr'   ImageHeader                          Jpeg2000 ImageHeader
  'inst'   InstructionSet                       N
  'jP  '   JP2Signature                         N
  'jp2c'   ContiguousCodestream                 N
  'jp2h'   JP2Header                            Jpeg2000
  'jp2i'   IntellectualProperty                 XMP
  'jpch'   CodestreamHeader                     Jpeg2000
  'jplh'   CompositingLayerHeader               Jpeg2000
  'lbl '   Label                                N
  'mdat'   MediaData                            N
  'mp7b'   MPEG7Binary                          N
  'nlst'   NumberList                           N
  'opct'   Opacity                              N
  'pclr'   Palette                              N
  'prfl'   Profile                              N
  'res '   Resolution                           Jpeg2000
  'resc'   CaptureResolution                    Jpeg2000 CaptureResolution
  'resd'   DisplayResolution                    Jpeg2000 DisplayResolution
  'roid'   ROIDescription                       N
  'rreq'   ReaderRequirements                   N
  'uinf'   UUIDInfo                             Jpeg2000
  'ulst'   UUIDList                             N
  'url '   URL                                  N
  'uuid'   UUID-GeoJP2                          EXIF
           UUID-XMP                             XMP
           UUID-Unknown
  'xml '   XML                                  XMP

=head2 Jpeg2000 ImageHeader Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    ImageHeight                          N
      4    ImageWidth                           N
      8    NumberOfComponents                   N
     10    BitsPerComponent                     N
     11    Compression                          N

=head2 Jpeg2000 CaptureResolution Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    CaptureYResolution                   N
      4    CaptureXResolution                   N
      8    CaptureYResolutionUnit               N
      9    CaptureXResolutionUnit               N

=head2 Jpeg2000 DisplayResolution Tags

   Index   Tag Name                             Writable
   -----   --------                             --------
      0    DisplayYResolution                   N
      4    DisplayXResolution                   N
      8    DisplayYResolutionUnit               N
      9    DisplayXResolutionUnit               N

=head2 Extra Tags

The extra tags represent information found in the image but not associated
with any other tag group.

  Tag Name                                      Writable
  --------                                      --------
  Comment                                       Y
  Directory                                     N
  EXIF                                          N
  Error                                         N
  ExifToolVersion                               N
  FileModifyDate                                Y
  FileName                                      N
  FileSize                                      N
  FileType                                      N
  ImageHeight                                   N
  ImageWidth                                    N
  Warning                                       N
  XMP                                           Y

=head2 Composite Tags

The values of the composite tags are derived from the values of other tags.
These are convenience tags which are calculated after all other information
is extracted.

  Tag Name             Derived From             Writable
  --------             ------------             --------
  Aperture             FNumber                  N
                       ApertureValue
  CFAPattern           CFARepeatPatternDim      N
                       CFAPattern2
  ConditionalFEC       FlashExposureComp        N
                       FlashBits
  DateTimeCreated      DateCreated              N
                       TimeCreated
  DateTimeOriginal     DateTimeCreated          N
  DriveMode            ContinuousDrive          N
                       Self-timer
  FlashOn              FlashBits                N
                       Flash
  FlashType            FlashBits                N
  FocalLength35efl     FocalLength              N
                       ScaleFactor35efl
  GPSDateTime          GPSDateStamp             N
                       GPSTimeStamp
  ImageSize            ImageWidth               N
                       ImageHeight
  JpgFromRaw           JpgFromRawStart          Y
                       JpgFromRawLength
  Lens                 ShortFocal               N
                       LongFocal
                       FocalUnits
  Lens35efl            ShortFocal               N
                       LongFocal
                       FocalUnits
                       Lens
                       ScaleFactor35efl
  LensSpec             Nikon:Lens               N
                       Nikon:LensType
  PreviewImage         PreviewImageStart        Y
                       PreviewImageLength
                       PreviewImageValid
  PreviewImageSize     PreviewImageWidth        N
                       PreviewImageHeight
  ProcessGeoTiff       GeoTiffDirectory         N
                       GeoTiffDoubleParams
                       GeoTiffAsciiParams
  RedEyeReduction      CanonFlashMode           N
                       FlashBits
  ScaleFactor35efl     FocalLength              N
                       FocalLengthIn35mmFormat
                       FocalPlaneDiagonal
                       FocalPlaneResolutionUnit
                       FocalPlaneXResolution
                       FocalPlaneYResolution
                       CanonImageWidthAsShot
                       CanonImageHeightAsShot
                       ExifImageWidth
                       ExifImageLength
                       ImageWidth
                       ImageHeight
  ShootingMode         CanonExposureMode        N
                       EasyMode
  ShutterCurtainHack   FlashBits                N
                       ShutterCurtainSync
  ShutterSpeed         ExposureTime             N
                       ShutterSpeedValue
                       BulbDuration
  SubSecDateTimeOriginal DateTimeOriginal       N
                       SubSecTimeOriginal
  ThumbnailImage       ThumbnailOffset          Y
                       ThumbnailLength

=head1 NOTES

This document generated automatically by
L<Image::ExifTool::BuildTagLookup|Image::ExifTool::BuildTagLookup>.

=head1 AUTHOR

Copyright 2003-2005, Phil Harvey (phil at owl.phy.queensu.ca)

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.

=head1 SEE ALSO

L<Image::ExifTool(3pm)|Image::ExifTool>

=cut
