These cameras were designed to use 16 mm film. In order to match all of the models this must be perforated on one side only. To use the cameras you will need to have a least one Minolta cassette. Minolta sold film for these cameras but now you must load your own cassettes and develop your own film. These cassettes can be hard to obtain and can have a high asking price. Some years ago there was a man selling new cassettes of VERY shoddy construction so be careful what you buy. Non-perforated 16 mm microfilm can also be used with special developers. There is also a russian version of these cameras. However the cassettes made for them a slightly too large to fit the Minoltas. But Minolta cassettes will fit the russian camera. You cannot use 110 film because of the pre-exposed frames lines.