Modify one value

[edwind]

Can someone please tell me the easiest way to use exiftool to modify one value. In this case, the PoseHeadingDegrees value.

When I try to use the method I have always used to add columns to a csv file, I get 'Invalid Source File', even though all I have done is open the csv, changed the PoseHeadingDegrees value and saved the csv.

[Hayo Baan]

I don't follow what you are trying to do with the csv file, but to change a tag value with exiftool, you use:
exiftool -TAG=NEWVALUE FILESorDIRS so in your case exiftool -PoseHeadingDegrees=12 FILESorDIRS

Hope this helps,
Hayo

[edwind]

Thank you.

I had a feeling it should be as easy as that but Wow! That was easy.

Thanks again.