Patent ID: 7884867

Claim:
An image-pickup system comprising: an image-pickup apparatus including an image-pickup element; and a lens apparatus which is detachably attached to the image-pickup apparatus and is possibly communicated to the image-pickup apparatus, wherein the lens apparatus includes: an aperture stop; a mechanical shutter; a detector which detects an opening state of the aperture stop; and a memory which, according to the opening state of the aperture stop, stores first information relating to time from the start of image-pickup to the completion of closing operation of the mechanical shutter, and second information relating to time from the start of shielding of light that passed through the aperture stop to the completion of the shielding of light, wherein the image-pickup apparatus includes a controller which performs an electronic shutter control of the image-pickup element and a control of the mechanical shutter, and wherein the controller receives the first and the second information, determined according to the opening state of the aperture stop, that is sent from the lens apparatus, resets charge accumulated in the image-pickup element in the electronic shutter control based on the received first information, and controls the mechanical shutter by a shutter speed not faster than a limit shutter speed corresponding to the received second information.