Patent ID: 7965334

Claim:
A camera comprising: an imaging element that receives transmitted light of an imaging optical system including a focus lens; a calculator that calculates a focus evaluation value varying in response to a status of a focusing adjustment of the focus lens based upon an output of photoelectric conversion of the imaging element; a scan-driver that scans the focus lens along an optical axis in obtaining a focus point; a pitch determiner that determines a lens movement pitch for obtaining the focus evaluation value during a scan driving of the scan-driver, depending on whether or not a lens position of the focus lens is within a predetermined range before the scan driving; a controller that obtains the focus evaluation value by activating the calculator every time the focus lens moves by the determined lens movement pitch during the scan driving; and a focusing adjuster that seeks a focus point by evaluating a plurality of focus evaluation values obtained by the controller and drives the focus lens to the focus point.