Image sensors, image pickup devices, and electronic apparatuses are provided. These can include an image sensor or image pickup device that includes a first insulating layer over a semiconductor substrate. A depression section is formed in the first insulating layer. An organic photoelectric conversion section fills the depression section. One or more inorganic photoelectric conversion sections can also be provided, with the organic photoelectric conversion section overlapping the inorganic photoelectric conversion sections. Alternatively or in addition, the depression section can taper from a side adjacent a light receiving side of the image sensor to a side adjacent the at least a first inorganic photoelectric conversion section.