Mode M: Auto ISO sensitivity control (ISO 100 to Hi 5) available with selectable upper limit; manual selection (ISO 100 to 51200 in steps of 1/3 or 1/2 EV) with additional options available equivalent to approximately 0.3, 0.5, 0.7, 1, 2, 3, 4, or 5 EV (ISO 1640000 equivalent) above ISO 51200 Modes P, S, and A: Auto ISO sensitivity control (ISO 100 to Hi 5) with selectable upper limit Night vision (EFFECT) mode: Auto ISO sensitivity control (ISO 100 to Hi 5) Other modes: Auto ISO sensitivity control (ISO 100 to 12800)