Camera

A camera comprising:

• an imaging element that receives transmitted light of an imaging optical system including a focus lens,
• a calculator that calculates 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 driving that scans the focus lens in a single direction along an optical axis in obtaining a focus point,
• a detector that detects an absolute position of the focus lens,
• a pitch determiner that determines a lens movement pitch deciding timing to obtain the focus evaluation value at a given interval in response to a detection output of the detector during 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.