Adjust the following ISO sensitivity settings.
- Maximum sensitivity: Choose the upper limit for auto ISO sensitivity control from values between ISO 200 and 25600. Auto ISO sensitivity control is used in modes P, S, and A and when On is selected for Auto ISO control (mode M) in mode M.
- Auto ISO control (mode M): Select On to enable auto ISO sensitivity control in mode M, Off to use the value selected for ISO sensitivity (mode M).
- ISO sensitivity (mode M): Choose the ISO sensitivity for mode M from values between ISO 100 and 25600. Auto ISO sensitivity control is used in other 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.