An imaging apparatus includes: a solid-state imaging device including a semiconductor substrate, a plurality of photoelectric conversion elements provided in the semiconductor substrate and a spectral element which is provided over the plurality of photoelectric conversion elements that are consecutive in a straight-line manner, in which a trapezoidal opening longitudinal in a direction from a bottom side into which light incident on the plurality of photoelectric conversion elements is introduced to a top side is provided, and which makes a spectral separation occur in the longitudinal direction by interference between the incident light and light reflected from an inner side surface of the trapezoidal opening; and a polarizing element which is provided on an optical path from a photographic subject to the solid-state imaging device and which allows polarized light to be transmitted therethrough.