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Your typical 35 mm SLR is designed to have the lenses changed while the film is in the camera, so it won't
hurt a thing. I suppose it's possible that there is a camera out there that doesn't allow the lens to be
changed mid-roll, but it's not likely. Usually the shutter is behind the lens, so no light will fall on the
film from changing the lens.
First answer by Pgr-fw. Last edit by Pgr-fw. Contributor trust: 353 [recommend contributor]. Question popularity: 13 [recommend question]





