57Features That Can Be Set Using the Multi SelectorShooting FeaturesAvailable Flash ModesU AutoFlash fires automatically when lighting is dim.V Auto with red-eye reductionBest choice for portraits. Reduces red-eye effect caused by flash in portraits (A58).W OffFlash does not fire.• Available when an external flash unit (optional) is attached.X Fill flashThe flash fires when a picture is taken, regardless of how bright the subject is. Use to“fill-in” (illuminate) shadows and backlit subjects.S ManualFlash is forcibly fired at the flash output that is set for the built-in flash or optionalSpeedlight SB-400.• Choose the flash output from SFull (full flash), S1/2, S1/4, S1/8, S1/16,S1/32, S1/64 and S1/128 (SB-400 only). For example, when S1/16 is chosen,the flash is 1/16 of the full flash.Y Slow syncFill flash is combined with a slow shutter speed.Suitable for portraits of human subjects shot at night or under dim light. Flashilluminates main subject; slow shutter speeds are used to capture background.Z Rear-curtain syncFill flash fires just before the shutter closes, creating the effect of a stream of lightbehind moving subjects.z Commander modeThe camera's built-in flash emits low-level flashes and an off-camera optional flashunit is controlled wirelessly as a remote flash (E57).The Speedlight fires according to the Commander mode options set in theshooting menu (A70).• Not available when an optional flash unit is attached.• Can be used when A, B, C, D, E, F or N mode is selected.