I've just been experimenting with a home-made slide-copier. From past experience I knew contrast control was going to be a problem. For various reasons (contrast-conrol foremost) I want to copy colour slides onto black and white film. Initial tests were OK but still showed a marked increase in contrast despite downrating and 'pulling' the film. I've since experimented with FP4 downrated to 32asa and devvved for 6.5 mins in dilute D76. Grain is almost invisible and contrast is admirably restrained. I decided to shoot each slide twice, giving one the correct metered exposure and the other, an extra stops worth. In almost every instance, it's the one given the extra exposure that looks best. That means my next test will be taken with FP4 rated at 12~15 asa! I'll pull development by 50%. Now, to get to my point. Has anyone out there in AP land copied trannies onto B&W film and if so, what were your results/conclusions. Any info that would save me the odd roll of film is welcome.