I have a problem that is intermittent and I don't know if the cause is from a film holder, the camera or in the darkroom. It doesn't look like a film holder problem with the splotches and I've used these before without any problems. I thought it might be the camera so I checked and I do have a couple small holes in the bellows but they were compressed when I used a 110mm lens in the shots before sunrise.
I made six exposures, developed (using fresh developer Pyrocat HD in trays) the first 3 sheets and had these splotches show up on 2 of the 3 sheets. I developed the last 3 today and no problems at all. Film is Hp5 but I had the same thing happen on a couple of sheets of Fp4.
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