Adjust the following ISO sensitivity settings.
- Maximum sensitivity: Choose the upper limit for auto ISO sensitivity control from values between ISO 200 and Hi 2. Auto ISO sensitivity control is used in exposure modes P, S, and A and when On is selected for Auto ISO control (mode M) in exposure mode M.
- Auto ISO control (mode M): Select On for auto ISO sensitivity control in exposure mode M, Off to use the value selected for ISO sensitivity (mode M).
- ISO sensitivity (mode M): Choose the ISO sensitivity for exposure mode M from values between ISO 64 and Hi 2. Auto ISO sensitivity control is used in other exposure modes.
Auto ISO Sensitivity Control
At high ISO sensitivities, the camera may have difficulty focusing and noise (randomly-spaced bright pixels, fog, or lines) may increase. This can be prevented by choosing a lower value for ISO sensitivity settings > Maximum sensitivity.