![]() The leak was hitting the film between the supply spool and the roller it was the subsequent frame where all hell let loose. ![]() On the roll that led to the "Oh my back!" photo on that page of mine, the first frame was fine, as the film was loaded in the house in relatively subdued light and wound to the first frame. In general the degree of effect of leaks can vary with the orientation of the camera, ambient light intensity and how quickly one winds to the next frame. That appears to be a fairly mild leak which makes it more difficult to track down. If the orientation of the original photo is as the scene looks in the OP (my original assumption), the image on film is upside down and reversed right to left, putting the leak on the side away from the dark slide suggesting a hinge seal problem (unless the camera was used upside down!!!) I am still a bit uncertain about this leak analysis. The one seal area that doesn't cover is the dark slide - mostly because I have yet to be forced to open that up! I now have four backs, I guess I could risk getting out a screwdriver, except I think I need to splurge on some of the 'official' JIS flavors. Hehe, that's me, thanks for the compliment. If anyone has any ideas about this, I'd be very grateful. I doubt that I let light into the film roll as I was loading or unloading the insert (twice), because the leak appears on exactly the same spot on each frame. The condition of the Sq-Ai back appears identical to the other back that is light-tight. Plus I can't see any tiny holes or cracks that might be causing this. I checked the back carefully and all the light seals are fine. The leak appears in the same spot on every frame (upper left), but varies in intensity, sometimes quite noticeable, sometimes barely. The film from the other back showed no leaks. I've used both without problems for several months, but the last two times I used both, the developed film from the SQ-Ai back showed some sort of light leak on every frame. I have a Bronica SQ-B with its original 120 back, plus an extra 120 back for an SQ-Ai.
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