A simple thing to do would be to run EXIFTool on both the original image files and the ones that had been opened by Photoshop, see what had changed.
I am sure that Photoshop wouldn't change the actual JPEG data but some change to the metadata isn't hard to imagine. Godfrey 2008/2/9, Derby Chang <[EMAIL PROTECTED]>: > Sort of OT, but this puzzles me. > > My friend as a little Canon P&S. She recently took a few pics that she > wanted to print straight away. So she pulled the card out, opened a > few > of the pics from the card (knowing she shouldn't do this, but she > was in > a rush) in Photoshop, and printed them. Didn't save, and the Date/Time > Modified of the files on the card are still the same as the Create > Date. > But sticking the card back into the Canon, she gets an "Unrecognized > file format" error on just the JPGs she opened. > > We copied the files back onto her laptop, and the JPGs are fine. > What's > going on there? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.