I have a Diana F+ Lomo (120 mm native). I recently bought the plugin to make photos with 35mm films.

I mounted the film correctly, but I had problems while taking photographs.

It was a 36 exposure film, but when I took the pictures and moved the film forward, advancing one by one every photo, I noticed I finished the film when the counter was on 18. When I developed the film, I had photos cut in two parts, with black parts too.

It happened on every photo I took, I moved the film too far forward. But I didn't know why, because I think I followed the index counting the photos. But at the 18th step it was impossible to go on, because I had already arrived at the end of the film.

Does somebody know what I did wrong and how to avoid this next time?


I'll suggest,

  1. Check if you have set the N/P switch and using the mask correctly. N stands for normal and P stands for panoramic, which is essentially wider than the normal films. You will have spaces between films if you use P switch with normal mask.
  2. The 35mm back won't stop you advancing the film, and it doesn't have a number for each shoot on the counter. Make sure you don't over advance the film after shooting
  3. Check if you've reset the counter before start
  • 1) I did not check, I will do it next time I will use it. 2) in fact it was stopped because the film was at the end of his length, it was not the camera stopping to advance it. How can i know if I over advance the film? that is a problem. 3) the counter started from 0.
    – axel
    Jan 11 '13 at 7:59
  • 1
    @axel for 2, i'm referring to the advance action after EACH shoot. You basically have to watch the counter and stop when you see the number is increased by 1.
    – Reinhard
    Jan 11 '13 at 11:25

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