An imaging apparatus, including: an image formation lens having focal lengths different in every region; a light receiving section having light receiving elements; optical elements corresponding to a plurality of the light receiving elements to make the corresponding light receiving elements receive an object light beam that passed through predetermined pupil regions in an exit pupil of the image formation lens; and an image generation section, wherein in the case of selecting, for generation of the image of the object, any one of the pupil regions in the exit pupil through which an object light beam passes, the image generation section selects, based on an object distance and focal lengths each corresponding to a plurality of the pupil regions of the exit pupil, at least one of the pupil regions through which an object light beam that forms an image at a position of the light receiving section passes.