Patent ID: 8678681
Filing Date: 2014-03-25
Classification: G03B,H04N

Abstract:
1. A shutter control device that performs photography by operating a shutter housed in a lens barrel, which is detachably attached to a camera body, said shutter control device comprising: a communication port provided for transmitting and receiving signals between said camera body and said lens barrel; a shutter controller provided in said camera body, said shutter controller outputting a shutter control signal for operating said shutter; a memory provided in said lens barrel, said memory storing shutter delay information regarding a time delay from when said shutter control signal is input to said lens barrel until when said shutter is closed; and an exposure-initiation processor that starts a charge storage operation in an imaging device provided in said camera body, said shutter control signal comprising a shutter-close signal for closing said shutter; said shutter controller receiving said shutter delay information regarding the time delay from said lens barrel, and transmitting said shutter control signal to said lens barrel through said communication port during photography, before an exposure time, which is determined by photometry, by an amount of time equal to said time delay, wherein said time delay extends from when said shutter-close signal is input to said lens barrel until said shutter becomes halfway open with respect to an opening degree immediately before the input of said shutter-close signal, said time delay varies in accordance with an aperture value.