I prefer to have no timestamp on my photos, but my parents like to have them because they can see when the photo was originally taken when inside their photo album. My camera(the Canon a540) automatically saves the date and time the photo was taken to the jpeg, but it does not show as a timestamp on the photo, which is good. In order to make both my parents and I happy, I'd have to add the timestamps before developing. Is there software that allows me to batch add timestamps to the photos(Sometimes more than 300 at a time), preferably open source/linux compatible? It is also ok if it is windows compatible. That would be much easier than manually entering the date to the photos in a text box.