I've been trying to figure this out, without much success. Google didn't turn out anything, either.
So, maybe someone here knows? When I load film, I align a small red triangle with "start here" line, then wind the camera (Bronica ETR-Si) till it shows "1" on the insert. If it's just some certain distance from "start here" to beginning of the film, and the back just lets me wind that certain distance, then I'm disappointed and the question is off
If it's not, then it gets interesting! Say, if I misalign "start here" and the triangle, what'll happen? Will the first frame be cut in the middle, or will it be okay? And really, how does the camera know it's time to stop letting me wind?
Bo.