Dispositif de mesure de luminosité pour un appareil photographique et procédé de commande associé.

摘要

An exposure value determination system which measures the light reflected off an object whose image is to be recorded when a first step release switch S1 is activated. The image of the object is recorded at a calculated exposure value when a second step release switch S2 is activated. If the time between the activation of the first step release switch and the second step release switch exceeds a predetermined time limit, an exposure value determination circuit measures the light a second time and calculates a new exposure value. If the predetermined time is again exceeded before the second step release switch is activated, the exposure value determination circuit will measure the light again and calculate a new exposure value.