An image-capturing element includes: a first substrate; a plurality of first pixels disposed in a matrix on the first substrate, each of the first pixels having a first light receiving element; a second substrate disposed at a position overlapping the first substrate and on a side opposite to a light receiving surface side of the first substrate when viewed from the light receiving surface side of the first substrate; a plurality of second pixels disposed in a matrix on the second substrate, each of the second pixels having a second light receiving element and a Fabry-Perot filter disposed on the light receiving surface side of the second light receiving element; and a plurality of optical systems disposed corresponding to the plurality of second pixels between the first substrate and the plurality of second pixels, the optical systems having negative refractive power.