An image pickup apparatus comprising: a photosensing part for converting an object to be photographed into electrical information and storing; storage control means for outputting a signal to control the storage state in the photosensing part; clamping means for clamping a part of electrical information read out from the photosensing part; and inhibiting means for inhibiting a change in output signal of the control means at least during the clamping operation by the clamping means.
