An image sensor includes n light receiving elements including first to n-th light receiving elements, each of the light receiving elements generating photoelectric conversion signals, n sequencers including first to n-th sequencers, each of the sequencers having both a sequencer input terminal to which a k-th horizontal control signal is input, and a sequencer output terminal from which a (k+1)-th horizontal control signal is output, and n switches including first to n-th switches, each of the switches having a switch input terminal to which a signal corresponding to the photoelectric conversion signal is input, a switch control terminal to which a k-th pixel control signal is input, and a switch output terminal which is electrically connected to the switch input terminal, wherein n is a natural number of 2 or more, and k is a natural number of 1 to n.