In a preferred aspect of the invention, an imaging optical system having a wide-angle optical system and a telephoto optical system which are provided in different regions is provided. A directional sensor that has a plurality of pixels including photoelectric conversion elements which are two-dimensionally arranged pupil-divides light beams which are incident through the wide-angle optical system and the telephoto optical system, and selectively receives the light beams. An image acquisition unit acquires a wide-angle image received from the directional sensor through the wide-angle optical system and a telephoto image received from the directional sensor through the telephoto optical system. The directions of the imaging optical axes of the wide-angle optical system and the telephoto optical system of the imaging optical system are different from each other.