Nikon D3S - Manual (Page 138)

112
S
Auto ISO Sensitivity Control
If On is selected for ISO sensitivity settings > ISO sensitivity
auto control in the shooting menu, ISO sensitivity will
automatically be adjusted if optimal exposure can not be achieved
at the value selected by the user (ISO sensitivity is adjusted
appropriately when the flash is used).
1
Select ISO sensitivity
auto control for ISO
sensitivity settings in
the shooting menu.
To display the menus,
press the
G button.
Select ISO sensitivity settings in the shooting menu,
highlight ISO sensitivity auto control, and press
2.
2
Select On.
Highlight On and press J (if
Off is selected, ISO sensitivity
will remain fixed at the value
selected by the user).
G button