Hi--I'm fairly successfully using the TIFFFile class to read & write meta-data from TIFF files. However, I can't figure out how to use it to write my Photoshop Tags. I know I can do that with the TIFFEncoder, but for large TIFF files of course the TIFFFile class has lots of advantages.

Specifically the issue I have is that if (say) I want to modify the Photoshop/XMP Caption (Description) I can create an updated PhotoshopResource after parsing them, but can't find a way to store them back into the image.

Thanks!--David