Patent ID: 7864242

Claim:
An image sensing apparatus having an image sensing element which receives light that has passed through an optical unit and accumulates the light as a charge, a mechanical shutter which travels to shield said image sensing element, a scan unit which makes a scan for starting charge accumulation for each region of said image sensing element, and a control unit which executes the scan for starting charge accumulation prior to traveling of said mechanical shutter and controls the scan for starting charge accumulation and traveling of said mechanical shutter so it serves as a front curtain and a rear curtain of a shutter, wherein said control unit sets a timing for performing the scan for starting charge accumulation for each region of said image sensing element so that there exist regions of said image sensing element, in which a time period from the beginning of charge accumulation by said scan unit until said mechanical shutter travels on that region is different from each other, so as to eliminate nonuniformity of an exposure amount produced for each region of said image sensing element, and wherein said control unit delays a timing of starting the scan for starting charge accumulation behind a timing of a first scan pattern which matches a traveling pattern of said mechanical shutter, and advances a timing of ending the scan for starting charge accumulation ahead of a timing of the first scan pattern, with decreasing exit pupil distance of the optical unit.