How do I remove the Caption field?

[bwanaRSA]

I'm using On1 Photo raw and when I export it gives me a "caption" field that is causing me no end of problems. How do I remove it?

I can remove Caption-Abstract using

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exiftool -iptc:Caption-Abstract= but that's not the right field. I need to keep that one.

[Phil Harvey]

See FAQ 3 to determine the tag name and where it is stored, then consult the Tag Name documentation to see if this tag is writable.

- Phil

[bwanaRSA]

Thanks Phil.

It says "string/" - does that mean I'm stuck with it?

[StarGeek]

What is the output of the command from FAQ 3?  "string/" shouldn't be the name and group of a tag.  You should see something like

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[XMP-dc]        Description                     : This is a description

[bwanaRSA]

Thanks StarGeek. When I do a exiftool -s for the image I find the description "Caption" under XMPToolkit                      : XMP Core 5.6.0

[Phil Harvey]

The "string/" in the Writable column of the tag name documentation means that it is writable as a string but avoided by default so you need to specify the full group name that you see with the -G1 option when extracting.  I think this is the XMP-acdsee group because that's the only Caption I can see in XMP.  So the command to remove this will be:

exiftool -xmp-acdsee:caption= FILE

- Phil

[bwanaRSA]

Thanks Phil

When I run with the -G1 option I see:

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[XMP-iptcCore]  Caption                         :

[Phil Harvey]

That is unfortunate.  Whatever software wrote that tag is in error because this tag is not part of the IPTC-for-XMP specification.

You will need to create a user-defined tag to be able to write this.  The attached config file will do it for you, and allow you to delete the Caption tag with this command:

exiftool -config caption.config -caption= FILE

- Phil

[bwanaRSA]

Thank you so much for your help Phil!

I see there are numerous posts on creating automator actions to deal with this so that's what I'll do next.

[StarGeek]

Alternatively, the XMP can be removed and recopied.  The result is that XMP-iptcCore:Caption is removed and the contents copied to XMP-acdsee:Caption, which can be edited normally.

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C:\>exiftool -G1 -a -s -xmp:all y:\!temp\Test4.jpg
[XMP-x]         XMPToolkit                      : Image::ExifTool 12.49
[XMP-iptcCore]  Caption                         : Badly created xmp
[XMP-dc]        Description                     : This is a description
[XMP-dc]        Title                           : Test4

C:\>exiftool -P -overwrite_original -xmp:all= -TagsFromFile @ -xmp:all y:\!temp\Test4.jpg
    1 image files updated

C:\>exiftool -G1 -a -s -xmp:all y:\!temp\Test4.jpg
[XMP-x]         XMPToolkit                      : Image::ExifTool 12.49
[XMP-acdsee]    Caption                         : Badly created xmp
[XMP-dc]        Description                     : This is a description
[XMP-dc]        Title                           : Test4

[Phil Harvey]

Good point.  That is a quick way to remove all non-standard XMP.

- Phil