Hi Rob - the pale edges on my shots were, from memory, in the same position. I had about 6 backs in total but only one exhibited this problem. At the time, I was using a local lab to develop the film (mostly B&W but some colour) and the pale edges were relatively consistent but more noticeable on darker / lower light photos. I'm not sure where you're based but, if you are in the UK, there's a very good dealer https://www.cameramuseum.uk/ - based in London on Museum Street just down from the British Museum - which I've used for the past 20 or so years. They often have A12 back for sale, separately from the bodies. They are not "cheap" but I have always been very happy with their products and services. It might be worth dropping them a line to see if they / their service engineer can suggest what might be causing the issue / possible solution. Just a thought but, if it's a common issue across all your backs, have you considered using duct tape to seal around the edges between one of the backs and the body? If you still get the pale edges, it might be the film stock you have or the processing / tank. All the best, Paul.Hi Paul,
Thank you so much for taking the trouble in responding and for your kind words regarding my photo. As you posted this I was actually online looking for a newer back to do a test. Can't find one anywhere. I have 3 backs and all exhibit the same issue. Did your pale margins occur on all sides as mine does?
I did have a similar problem with a light leak around the dark slide (right side of print = left side of back). I was going to say it was fixed with by having the back serviced, but then I remembered that I'm only now getting around to running a roll of film through the back. I'll let you know.This seems to be happening with pretty much every roll of black and white that I home develop. A12 backs have had their light seals replaced and I use more than sufficient developer. Any ideas would be greatly appreciated.