So my first post here, and sorry it's a problem.
Here is a 4x5 negative (FP4+) and I keep getting these light leaks, they are never the same, but always at the top (trap end of the holder).
The leaks can be full width of the neg and as you can see it looks like its getting fogged before or after being in the film holder. I thought I had tracked it down to possibly getting light in my Calumet Film Changing Room/tent. So I did two things, loaded the holders/tank in a Paterson film changing bag (Great no fogging) then added an extra elasticated strap to the arms of the Calumet tent so each arm hole now has two restrictions instead of just one. And for bolt and braces also covered the tent in black cloth. I always do this is a room with no lights on with curtains closed, not dark, but no strong light. For a few sessions ( 6 or so negatives) no fogging , then I got this one. The other neg on side b of the same holder was loaded up and put in the tank at the same time and that was fine.
I can't track it down to any film holder, I have 6 and it can happen to any. The tank is the Stearman Press SP-445, and I have 2 of these, again no correlation with which tank used.
Is it possible to get fogging like this from faulty film holders, I can't see it, as I said I have 6 of them and are all new Toyo holders. The camera is a Cambo Legend, used indoors. Tried different bellows, checked for leaks etc.
Can anyone help ?
Thank you,
Mike
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