An imaging apparatus of the present invention includes: a lens optical system including a lens and a stop; an imaging device including at least a plurality of first pixels and a plurality of second pixels on which light having passed through the lens optical system is incident; and an arrayed optical device arranged between the lens optical system and the imaging device, wherein: the lens optical system includes, in a plane vertical to an optical axis, a first optical area that transmits therethrough light of a first wavelength band and a second optical area that transmits therethrough light of a second wavelength band different from the first wavelength band; and the arrayed optical device makes light having passed through the first optical area incident on the plurality of first pixels and light having passed through the second optical area incident on the plurality of second pixels.