Luckily, I've never had a memory card fail on me thus far and since making a backup copy of a memory card never was a real option for me when traveling, I never worried too much about backups.
Today however, some cameras, such as Nikon's D7100, have dual SD card slots. I would like to know if any of these cameras can be used to make off-camera backups of my pictures and if so, how.
The system that I'm thinking of is having memory card A in the camera all the time and use that for the pictures I shoot each day. Then at night, put memory card B in the camera and copy that day's pictures from A to B.
This way, when the camera gets lost/stolen, at least I have the pictures on a card somewhere else.
Does anybody use a system like this? Will the D7100 or other cameras let me make copies in this way?