Patent ID: 8284295

Claim:
A digital camera, comprising: an imaging/focus detection element adopting a rolling shutter system, in which a plurality of focus detection pixel rows each made up with a plurality of focus detection pixels are incorporated in a two-dimensional array of a plurality of imaging pixels, that receives a light forming an image via a photographic optical system and outputs image signals and focus detection signals; a focus detection unit that detects a state of focal adjustment at the photographic optical system based upon the focus detection signals output from the focus detection pixel rows; an image blur detection unit that detects an image blur quantity indicating an extent of a blur on the image based upon the image signals output from the imaging/focus detection element; a first reliability judgment unit that judges, based upon the image blur quantity, whether or not the state of focal adjustment detected by the focus detection unit in correspondence to each of first type focus detection pixel rows disposed along a direction different from a rolling shutter scanning direction among the focus detection pixel rows is reliable; a second reliability judgment unit that judges whether or not the state of focal adjustment detected by the focus detection unit in correspondence to each of the plurality of focus detection pixel rows is reliable, when at least one of the first type focus detection pixel rows among the focus detection pixel rows is judged to be reliable, and a focal adjustment unit that executes focal adjustment for the photographic optical system based upon the state of focal adjustment judged to be reliable by the first reliability judgment unit and the second reliability judgment unit.