Nikon D3S - Manual (Page 136)

110
S
Choosing ISO Sensitivity
Manually
ISO sensitivity can be set to values between ISO 200 and ISO 12800
in steps equivalent to
1 /
3
EV. Settings of from about 0.3 to 1 EV
below ISO 200 and 0.3 to 3 EV above ISO 12800 are also available
for special situations.
ISO sensitivity can be adjusted
by pressing the ISO button and
rotating the main command
dial until the desired setting is
displayed in the control panels
or viewfinder.
ISO button Main command
dial
Top control panel Rear control panel Viewfinder
ISO sensitivity: 12800