If you have Windows I would suggest a program called "Undelete for SD Card." It's a small file, only 1.73 MBs. It can look at your camera's card and find those files that were erased. Just make sure to stop using the card until you can try the program as those files are actually still there (just hidden), but could be overwritten by new images if you keep using it. CNET has a download page for the program at: http://download.cnet.com/Undelete-for-SD-Card/3000-2369_4-10782815.html