PURPOSE: To eliminate the need for an exclusive switch for storage release, by constituting so that photometric information stored in advance is released in response to switching of a photographing mode.

CONSTITUTION: Mean photometric voltage V1 of an analog value corresponding to luminance of an object to be photographed, from a mean photometric circuit, or spot photometric voltage V2 of an analog value corresponding to luminance of an object to be photographed from a spot photometric circuit is supplied to an information processing circuit 21. Subsequently, in the processing circuit 21, each photometric voltage is digitally converted, and after that, is stored as photometric information in a memory in a CPU24. Subsequently, when the photographing mode is switched, it is detected by the CPU24, and the photometric information stored already is cleared. In this way, the photometric information stored already is released by only switching the photographing mode, therefore, an exclusive storage releasing switch can be eliminated.