Automatic exposure control circuit

摘要

An automatic exposure control circuit of a photographing camera having a shutter blade associated with an electromagnet driven by a driving circuit is disclosed, which is featured by having a film sensitivity information detector for detecting the film sensitivity electrically to provide an output signal, means responsive to the output signal for changing a reference voltage to be applied to the driving circuit and a gamma value correcting means for correcting the reference voltage according to the gamma value of a light receiving element of the camera.