BMbikerider
Member
Has anyone had problems with a film back on a Bronica SQa. The one I had with my camera works fine, but I recently bought a very good condition spare so I could swap over B&W and colour whenever I needed.
The spare back has a problem with frame spacing when using colour film. (Kodak Gold 200) It loaded easily and I took all 12 frames then processed it only to find that I had only eight and a half images. The start of the film had a space almost the equivalent of a full frame which was blank. The next frame had a quite wide gap between the first and the 2nd on and the 3rd frame had a slightly bigger gap between it and the 2nd frame with each following frame the gap increased so that between the 8th and the 9th frame the gap was large enough for a complete frame.
The film counter worked normally and the only difference I found was the wind on was a little bit stiffer than for a B&W film.
I put an out of date B&W film through the next day to see if I could replicate the problem, but after processing that film it was apparent the spacing was correct with all 12 frames being equally placed right along the full length.
The film back I bought that gave the problem appears to have had very little use and is unmarked, The dark-slide has no marks where it would show that there had been repeated insertions and withdrawals
I hung both films up and photographed them to show you the difference. (Take no notice of the dark line evident through the complete film, that is just the background behind the film.) The density of the colour negs are not in question either, because they all print very well. Your thoughts please
The 1st frame on each film was the one on the right hand edge
The spare back has a problem with frame spacing when using colour film. (Kodak Gold 200) It loaded easily and I took all 12 frames then processed it only to find that I had only eight and a half images. The start of the film had a space almost the equivalent of a full frame which was blank. The next frame had a quite wide gap between the first and the 2nd on and the 3rd frame had a slightly bigger gap between it and the 2nd frame with each following frame the gap increased so that between the 8th and the 9th frame the gap was large enough for a complete frame.
The film counter worked normally and the only difference I found was the wind on was a little bit stiffer than for a B&W film.
I put an out of date B&W film through the next day to see if I could replicate the problem, but after processing that film it was apparent the spacing was correct with all 12 frames being equally placed right along the full length.
The film back I bought that gave the problem appears to have had very little use and is unmarked, The dark-slide has no marks where it would show that there had been repeated insertions and withdrawals
I hung both films up and photographed them to show you the difference. (Take no notice of the dark line evident through the complete film, that is just the background behind the film.) The density of the colour negs are not in question either, because they all print very well. Your thoughts please
The 1st frame on each film was the one on the right hand edge
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