A solid-state image pickup device according to the present disclosure includes: a pixel array unit, unit pixels being arranged in the pixel array unit, the unit pixels each including a plurality of photoelectric conversion sections; and a driving unit that changes a sensitivity ratio of the plurality of photoelectric conversion sections by performing intermittent driving with respect to storing of signal charges of the plurality of photoelectric conversion sections. That is, the solid-state image pickup device according to the present disclosure changes a sensitivity ratio of the plurality of photoelectric conversion sections by performing intermittent driving with respect to storing of signal charges of the plurality of photoelectric conversion sections.