An image sensor includes: a first pixel having a first photoelectric conversion unit that photoelectrically converts light having entered therein, and a first light blocking unit that blocks a part of light about to enter the first photoelectric conversion unit; and a second pixel having a second photoelectric conversion unit that photoelectrically converts light having entered therein and a second light blocking unit that blocks a part of light about to enter the second photoelectric conversion unit, wherein: the first photoelectric conversion unit and the first light blocking unit are set apart from each other by a distance different from a distance setting apart the second photoelectric conversion unit and the second light blocking unit.