Reading unknown MakerNotes tags on the command line

[francois]

I'm inspecting many of my photos to maybe discover the meaning of unknown MakerNotes tags, and would like to browse quickly a specific set of unknown tags in many photos. I've tried like:

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$ exiftool -Panasonic0x87 a.jpg
$ exiftool -Panasonic0x0087 a.jpg
$ exiftool -tag0x0087 a.jpg
$ exiftool -tag_0x0087 a.jpg
$ exiftool -Unknown_0x0087 a.jpg
$ exiftool -MakerNotes:0x0087 a.jpg
$ exiftool -MakerNotes:0x87 a.jpg


... but none worked 

Is their a way to specify a specific unknown MakerNotes tag on the command line? I can probably come up with grep command to process the output of all tags, but would prefer to use ExifTool directly if possible.

[Phil Harvey]

You can only access unknown tags if you specify -u or -U.  Use -s with -u to see the names of the unknown tags.

- Phil

[francois]

Great thanks, it works! My attempt #2 was very close, just missing an underscore.

For reference, example command line to see an unknown MakerNotes tag value for all files in a directory:

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$ exiftool -u -Panasonic_0x0087 *.JPG