How many frames fit on a 35mm or 16mm roll of film?
The density of frames on a reel varies depending on the size of the source document and the reduction ratio at which it is filmed. A one hundred foot roll of 16mm film will usually hold 2,000-2,500 frames of 8.5″ x 11″ documents filmed at a standard reduction ratio of 24x. A one hundred foot roll of 35mm film will hold 1000 frames of the same size document at 12x.
