MICROFILM CAMERA

A microfilm camera having a high speed frame advance system comprising a pair of idler arms adapted to control the supply and take-up of microfilm so as to maintain substantially constant tension thereon. An aperture at which the microfilm is photographically exposed and a frame advance drive roller are disposed between the idler arms. The frame advance drive roller is rotatably driven, on demand, by a servomotor which is energized by a digital control circuit. The digital control circuit receives feedback information from a shaft encoder connected to the servomotor and functions to accelerate and decelerate the servomotor in response thereto.