Trying to write data into EXIF Image Description fields

[JeffK]

Hello,

I am trying to place data in the variable(?) {File.MD.Exif::Main\270\ImageDescription\0}.  It is read only.  I have established that if I write the data into the variable {File.MD.XMP::tiff\ImageDescription\ImageDescription\0} it is reflected in the desired place {File.MD.Exif::Main\270\ImageDescription\0}.  However if I change the data in {File.MD.XMP::tiff\ImageDescription\ImageDescription\0} and do a metadata writeback it is not reflected in {File.MD.Exif::Main\270\ImageDescription\0} and the initial data remains.

I have set the option Metadata Working Group Compliance to No in the Metadata2 preferences panel.

Does anybody know what I might be doing wrong.   (I am doing this so that I might use the data in another program that reads this field.)

Thanks,

Jeff

[JeffK]

Sorry.  Looks like I've sorted it.  Don't know what changed.

[Mario]

This EXIF field is synchronized from the XMP description during write-back. It's one of the fields specified in the Metadata Working Group specification. There is also a side effect with IPTC data (legacy IIM data), if you use that. Maybe you need to write back twice, if the tags hold different values.

[JeffK]

Thanks Mario, I'll explore further.  Jeff