I came across this link yesterday pointing to a free, open source software utility used for recovering photos from digital media. There is no install needed, just run the software from a directory. It is a DOS based program but still seems very easy to use. Photorec does not write anything to your digital media which will preserve the integrity of your media in case you need to try additional recovery tools. I have not tried it so I cannot say how well it works, but for the price, it can’t be that bad!