I just bought a camera that support roll back the film before it reach 36 exposure. I find it very convenient. But I have some doubt, anyone can enlighten me. Q!
1. How accurate is the roll back film. Let say I have taken exposure and the LCD show 10 (9 exposure rite?) then I rolled back the film. One day I decided to use the film again, and I will press my shutter until I reached 10 in the LCD display. Should I press until it reach 10 or should I press one more time, so the display will show 11? I want to prevent overlap between the last exposure with the next shot.
2. What is the best way to press the shutter without having a stray light entering the film chamber. What I did in the past, I change to M mode. Keep the lens cap attached. Choose smallest aperture and fastest shutter speed. Correct? Should I close the viewfinder also?
3. Dumb q, how many time can we perform the above operation?