I have to copy the content of the tag "DateCreated" (Photoshop name room) into the Exif Tag "DateTimeOriginal" within a xmp Sidecar File affiliated to a Canon RAW Image. For a single File it worked with exiftool using the line DateCreated(to)DateTimeOriginal. But I need to do it for about 15.000 Files in different Folders and subfolders. And cant get the right string since I am just a photographer and no IT-Specialist. In Addition there are some Files without content in Tag "DateCreated" and some Files having only the year in it but no month or day nor time. Who can help me to get through this process. If necessary I would pay for. thank you very much martin martin(at)jehnichen.de