The technology of the present invention relates to an image-capture element and an electronic device that can selectively acquire only specific electromagnetic wave wavelengths and generate signals having improved wavelength resolution. This technology comprises: first pixels equipped with metal thin film filters that allow light of first frequency bands to pass therethrough; and second pixels equipped with color filters that allow light of second frequency bands that are wider than the first frequency bands to pass therethrough. Signals of third frequency bands are generated from signals froma plurality of first pixels equipped with metal thin film filters that allow light of different first frequency bands to pass therethrough. This technology can be applied to a rear surface illumination or front surface illumination CMOS image sensor, for example.