Photoelectric transducer apparatus for focus detection

摘要

A photoelectric transducer apparatus detects whether a charge storing period of a photodiode array in a CCD image sensor is more or less than a given period by means of a monitor circuit and controls a charge storing period by switching a charge storage capacity of the photodiode array in response to an output of the monitor circuit so as to increase when an object being photographed is bright, for example, and hence the charge storing period is less than the given value.