An imaging apparatus comprising: a bifocal lens having a first region with a first characteristic and a second region with a second characteristic different from the first characteristic; an image pickup device (16,161,162,163,164) having a first light-receiving element group and a second light-receiving element group which are two-dimensionally arranged; optical elements (12a, 12b) for providing pupil directivity for each of a light beam incident on the first light-receiving element group and a light beam incident on the second light-receiving element group, the optical elements (12a, 12b) being provided correspondingly to the first light-receiving element group and the second light-receiving element group of the image pickup device, and letting only a light beam passing through the first region of the bifocal lens received by the first light-receiving element group and letting only a light beam passing through the second region of the bifocal lens received by the second light-receiving element group; and an image generating unit (40,24,25) configured to generate the first image and the second image based on the first imaging signal and the second imaging signal from the first light-receiving element group and the second light-receiving element group, respectively, characterized in that: the bifocal lens has the first region which is in a circular shape centering on an optical axis of the bifocal lens and the second region which is in an annular shape, the first region with the first characteristic being for a general photographing distance and the second region with the second characteristic being for macro photography, and an arrangement density of the first light-receiving element group of the image pickup device is higher in a peripheral portion than in a center portion of the image pickup device, and the arrangement density of the second light-receiving element group is higher in the center portion than the peripheral portion of the image pickup device. a bifocal lens having a first region with a first characteristic and a second region with a second characteristic different from the first characteristic; an image pickup device (16,161,162,163,164) having a first light-receiving element group and a second light-receiving element group which are two-dimensionally arranged; optical elements (12a, 12b) for providing pupil directivity for each of a light beam incident on the first light-receiving element group and a light beam incident on the second light-receiving element group, the optical elements (12a, 12b) being provided correspondingly to the first light-receiving element group and the second light-receiving element group of the image pickup device, and letting only a light beam passing through the first region of the bifocal lens received by the first light-receiving element group and letting only a light beam passing through the second region of the bifocal lens received by the second light-receiving element group; and an image generating unit (40,24,25) configured to generate the first image and the second image based on the first imaging signal and the second imaging signal from the first light-receiving element group and the second light-receiving element group, respectively, characterized in that: the bifocal lens has the first region which is in a circular shape centering on an optical axis of the bifocal lens and the second region which is in an annular shape, the first region with the first characteristic being for a general photographing distance and the second region with the second characteristic being for macro photography, and an arrangement density of the first light-receiving element group of the image pickup device is higher in a peripheral portion than in a center portion of the image pickup device, and the arrangement density of the second light-receiving element group is higher in the center portion than the peripheral portion of the image pickup device. the bifocal lens has the first region which is in a circular shape centering on an optical axis of the bifocal lens and the second region which is in an annular shape, the first region with the first characteristic being for a general photographing distance and the second region with the second characteristic being for macro photography, and an arrangement density of the first light-receiving element group of the image pickup device is higher in a peripheral portion than in a center portion of the image pickup device, and the arrangement density of the second light-receiving element group is higher in the center portion than the peripheral portion of the image pickup device.