An imaging apparatus comprising: an imaging device that includes: a pixel region that is sequentially exposed row by row, a plurality of pixels being arranged in a row direction and a column direction in the pixel region, the plurality of pixels including pixels having different incident angle directivities and that each receive incident light and output one detection signal indicating an output pixel value modulated depending on an incident angle of the incident light, the incident light entering the imaging device from an object via neither an imaging lens nor a pinhole; and a plurality of detection regions (202A, 202B, 202C) that are disposed in different rows in the pixel region, and are used for flicker detection, wherein arrangement of the pixels is substantially the same in the respective detection regions, and the incident angle directivities of the pixels at the same positions in the respective detection regions are substantially the same so that the detection regions capture images of substantially the same object at substantially the same object distance and angle of view; and a flicker detection unit that performs flicker detection on a basis of a plurality of detection images, the plurality of detection images corresponding to the respective detection regions being generated for the plurality of detection regions on a basis of detection signals output from the pixels in the respective detection regions; wherein the flicker detection detects flicker, on a basis of a difference in luminance between the respective detection images. an imaging device that includes: a pixel region that is sequentially exposed row by row, a plurality of pixels being arranged in a row direction and a column direction in the pixel region, the plurality of pixels including pixels having different incident angle directivities and that each receive incident light and output one detection signal indicating an output pixel value modulated depending on an incident angle of the incident light, the incident light entering the imaging device from an object via neither an imaging lens nor a pinhole; and a plurality of detection regions (202A, 202B, 202C) that are disposed in different rows in the pixel region, and are used for flicker detection, wherein arrangement of the pixels is substantially the same in the respective detection regions, and the incident angle directivities of the pixels at the same positions in the respective detection regions are substantially the same so that the detection regions capture images of substantially the same object at substantially the same object distance and angle of view; and a pixel region that is sequentially exposed row by row, a plurality of pixels being arranged in a row direction and a column direction in the pixel region, the plurality of pixels including pixels having different incident angle directivities and that each receive incident light and output one detection signal indicating an output pixel value modulated depending on an incident angle of the incident light, the incident light entering the imaging device from an object via neither an imaging lens nor a pinhole; and a plurality of detection regions (202A, 202B, 202C) that are disposed in different rows in the pixel region, and are used for flicker detection, wherein arrangement of the pixels is substantially the same in the respective detection regions, and the incident angle directivities of the pixels at the same positions in the respective detection regions are substantially the same so that the detection regions capture images of substantially the same object at substantially the same object distance and angle of view; and a flicker detection unit that performs flicker detection on a basis of a plurality of detection images, the plurality of detection images corresponding to the respective detection regions being generated for the plurality of detection regions on a basis of detection signals output from the pixels in the respective detection regions; wherein the flicker detection detects flicker, on a basis of a difference in luminance between the respective detection images.