How to recover lost files

[robertminner]

Hello,
I scanned my fotocamera for lost pics and find over 100. When I'm trying to see them nothing happened. The pictures are in the same size like before but i can not see them.What I see is only the pictures codes - a lot of numbers and information when I did them and the name of fotocamera-I supose it is Hex mode. I tried with XnWiew but no luck.
The operation name is " Recovered FAT partition and the format of pictures is PNG.

Any advice?