A control unit 21 of a main device 20 is configured to recognize a predetermined subject (face of person) included in a wide-angle image taken by an imaging device 10 and to correct distortion of an image (face image of the person) of a part of the subject, and to associate a part of the wide-angle image with the corrected image of the part of the subject, e.g., to display a part of the wide-angle image with the corrected image of the part of the subject on a reproduction screen.