Imaging apparatus

An imaging apparatus, comprising:

• a lens optical system including a first area and a second area, the second area having an optical characteristic which provides a focusing characteristic different from the focusing characteristic by light rays which have passed the first area;
• an imaging element including a plurality of first pixels and a plurality of second pixels on which light which has passed the lens optical system is incident and which includes a filter having a first spectral transmittance characteristic, a plurality of third pixels on which light which has passed the lens optical system is incident and which include a filter having a second spectral transmittance characteristic, and a plurality of fourth pixels on which the light which has passed the lens optical system is incident and which include a filter having a third spectral transmittance characteristic;
• and
• an optical array element located between the lens optical system and the imaging element, the optical array element causing the light which has passed the first area to be incident on the first pixel and causing the light which has passed the second area to be incident on the second pixel;
• wherein in a pixel group including one of the plurality of first pixels, one of the plurality of second pixels, one of the plurality of third pixels and one of the plurality of fourth pixels which are arrayed in two rows by two columns, the first pixel and the second pixel are respectively located at positions of (1,1) and (2,2) or (2,2) and (1,1) or are respectively located at positions of (1,2) and (2,1) or (2,1) and (1,2).