I don’t know about images, but would have thought that location data is embedded in the photo itself, and since DEVONthink doesn’t change files, that the info is still there.
Perhaps, as a trial user, you should get a copy of the Handbook for DEVONthink and the fine e-book (free of charge compliments of DEVON Technologies) where this might be discussed and documented. But there is more there to have a quick read about. On their we site.
Re OCR of screen shots. I have two rules which run against the Inbox. It converts any incomging images to PDF’s. And another to OCR any PDFs that are not OCRed (found by Wordcount=0). See screen shots. Rules explained in the Handbook.