41 42CSM.UPL11114422225ftmCSM.UPLCSM.UPLCSM.UPLThe AF assist infrared light can be disabled.Custom settings (C-14 on page 85)AF Assist Infrared Light★ The AF assist infrared light is emitted only when the focus mode is set to “S”(single focus mode).★ Effective range of the AF assist infrared light is limited. It does not reach distantsubjects.Range: 9m/29.5 ft. (using 80 mm f/2.8 lens under our test conditions)★ When using a lens hood or a bellows lens hood (sold as an optional accessory)that may interfere with the assist light, set focus before mounting the hood.When the subject is dark or under-exposed andthe camera fails to auto-focus, a red lamp maylight on the front of the camera when the shutterrelease button is half-pressed. This is a lightthat assists the camera’s auto focus function.Mirror up ShootingSet the shutter release mode selector lever to“C” and hold down the shutter for continuousshooting.Drive ModesContinuous ModePhotographs are taken continuously as long as the shutter release button is pressed.Set the shutter release mode selector lever to“S”.The film is advanced by one frame each time the shutter is released.Single-Frame ModeWhen the shutter button is pressed, the mirrormoves up, and when the shutter button ispressed again, the shutter is tripped, and apicture is taken. For the mirror up shootingprocedure, see pages 62 to 64.