Auto Iso Sensitivity Control - Nikon D3s Technical Manual

Exposure: Auto ISO Sensitivity Control
Auto ISO sensitivity control automatically adjusts ISO
sensitivity if optimal exposure can not be achieved at the
value selected by the user.
Tip
Exposure compensation can be used with auto ISO sen-
sitivity control. Matrix metering is recommended. In
exposure mode
ensure optimal exposure at the selected shutter speed
and aperture.
20
h
, enable ISO sensitivity auto control to