Manual-wind camera

Abstract

A manual-wind camera is provided having a wind lever in which a film having no sprocket holes is loaded, the film being wound on a take-up spool, frame by frame, by manually operating the wind lever. The camera includes a pulse generator which generates pulses in accordance with movement of the film wound by the wind lever, and a counter which detects and counts the pulses generated by the pulse generator, the pulse generator and the counter are connected to a control device. The control device detects a film winding speed of the film in accordance with the number of the pulses counted by the counter, wherein the control device adjusts a reference pulse number, which corresponds to a predetermined appropriate winding amount of the film, in accordance with a the film winding speed detected by the control device. An engagement of the wind lever with the take-up spool is released at the moment the adjusted reference pulse number becomes equal to the number of the pulses counted by the counter.

Dependencies are inferred from the claim text.