Free, simple photo retrieval with PhotoRec
PhotoRec is a free digital photo recovery tool that can restore lost images from computers, digital cameras, mobile devices, memory cards or other storage media such as CD-ROMs. Because this utility ignores the device's file structure, it can retrieve data even when the file system has been corrupted. You can even upload a damaged or corrupted file to the utility's online checker to see whether it can restore it before trying a number of files. If normal restoration tools have failed, PhotoRec might be your best bet.