Patent ID: 6980251

Claim:
An image sensing apparatus having an image sensor for sensing a subject image formed on an image sensing plane and outputting a video signal corresponding to the subject image, comprising: a display unit adapted to display the subject image and a frame which surrounds a photometric zone superimposed on the subject image; a zone changing unit used for changing position and size of the frame displayed on said display unit for designating a part of the subject image whose video signal is subjected to photometry; an exposure detection unit adapted to detect an exposure condition corresponding to that of a video signal in the frame of the photometric zone changed by said zone changing unit; an exposure control unit adapted to determine control parameters corresponding to the detected exposure condition and control exposure in accordance with the control parameters; memory adapted to store the control parameters outputted by said exposure control unit when exposure control processing concerning the part of the subject image in the photometric zone by said exposure control unit is completed and an optimum exposure control state for the image in the frame of the photometric zone is obtained; and a control unit adapted to control said exposure control unit to maintain an exposure control state corresponding to the control parameters stored in said memory regardless of a change of a magnification of zooming means in the state that the control parameters corresponding to the optimum exposure control state is stored in said memory.