I thought Ektapan sounded familiar, so I checked my Kodak Master Darkroom Dataguide (circa 1970) and sure enough found Ektapan 4162, available in sheets, 70mm rolls and 3.5" rolls.
I was thinking it could have something to do with the thinner film. But @randyB was having trouble with thicker film. I haven't put enough rolls through mine to see the issue again. My favorite camera store guy just told me "Yeah, that happens sometimes". We'll see what the future brings.
Three years later... Hoping for new insights to a previously report problem...
I came up against this issue with my recently acquired F100 today. It's about the fourth roll I've run through it. It was a roll of Rollei Infrared 400. Everything happened just as @Joseph Bell reported. It just kept...
OK, that's pretty much what I was imagining... I'm afraid that even though I have a N8008s I bought brand new, I've never seen that behavior. I'm afraid I don't have enough insight into the mechanical magic of cameras to be of much help. Hopefully some Nikon tech-head will chime in with some...
How do you know the film is advancing? How can you tell the sprockets are grabbing? If it's not loaded correctly, it'll try to advance/load every time you press the shutter, but the film won't be moving.
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