Image-ExifTool - Exif tag and value names - nonstandard usage

Posted on Sun Feb 18 13:03:55 2007 by mjc
Exif tag and value names - nonstandard usage

Hi all,

Exiftool doesn't appear to follow the Exif standard for tag names and values. Why? For instance:

[mjc@strawberry eraseme]$ exiftool -s -s -e -n -G1 s_gps.jpg | grep IFD.*Date
[IFD0] ModifyDate: 2002:07:19 13:28:10
[ExifIFD] DateTimeOriginal: 2002:07:13 15:58:28
[ExifIFD] CreateDate: 2002:07:13 15:58:28

These tags are called DateTime, DateTimeOriginal, and DateTimeDigitized respectively in the Exif standard.

Or:
[mjc@strawberry eraseme]$ exiftool -s -s -e -n -G1 s_gps.jpg | grep Meter
[ExifIFD] MeteringMode: 5
[mjc@strawberry eraseme]$ exiftool -s -s -e -G1 s_gps.jpg | grep Meter
[ExifIFD] MeteringMode: Multi-segment

The standard defines "5" as "Pattern".

The standard I'm referring to is http://www.exif.org/Exif2-2.PDF. For the curious, I'm wondering about using exiftool in gThumb (http://bugzilla.gnome.org/show_bug.cgi?id=409050).

- Mike

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