A solid-state imaging device includes a plurality of pixels, wherein one or more of the plurality of pixels have a pupil dividing portion and a light receiving portion, the light receiving portion includes a plurality of photoelectric conversion regions, an element isolation region is provided between adjacent ones of the plurality of photoelectric conversion regions, and wherein a scatterer is provided within the pupil dividing portion and above the element isolation region, and the scatterer is formed from a material of a refractive index smaller than a refractive index of a material of the pupil dividing portion peripheral to the scatterer.