Patent ID: 8094999

Claim:
An imaging apparatus comprising: a light receiving element having a micro lens array provided with a plurality of micro lenses arranged two-dimensionally, and a plurality of photoelectric conversion elements provided for the plurality of micro lenses, and outputting a light receiving signal obtained by receiving a light beam from an optical system via the micro lens array; a detector that detects a shift amount of image plane by the optical system for a plurality of focus detecting positions set at a plurality of positions in the image plane by the optical system; and a controller that determines a focus adjusting range for the optical system based on a difference between a first shift amount corresponding to a nearest view side with respect to the optical system and a second shift amount corresponding to a farthest view side with respect to the optical system out of shift amounts respectively detected for the plurality of the focus detecting positions, and obtains the light receiving signal at each of different positions within the focus adjusting range with the light receiving element.