bob338
Well-known
I do it sometimes so I remember what camera I shot the roll with. It's a good way to burn off the start of the roll, where you still don't know if the shot will make it or not.
i'm surprised this is the first mention of this. i take a picture of the mirror at the beginning of almost every roll so i have a record of what camera and lens combo the roll was shot with. you'd be surprised how useful this is with older rolls of film. it's especially useful if you have a lot of lenses and a crummy memory.
bob