Nikon D750 DSLR Camera (Body Only) - Manual (Page 162)

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ISO Sensitivity
The camera’s sensitivity to light can be adjusted according to the
amount of light available. Choose from settings that range from
ISO 100 to ISO 12800 in steps equivalent to
1 /
3
EV. Settings of
from about 0.3 to 1 EV below ISO 100 and 0.3 to 2 EV above ISO
12800 are also available for special situations. Auto, scene, and
special effect modes also offer an
AUTO option, which allows the
camera to set ISO sensitivity automatically in response to
lighting conditions. The higher the ISO sensitivity, the less light
needed to make an exposure, allowing higher shutter speeds or
smaller apertures.
ISO sensitivity can be adjusted
by pressing the
W ( S ) button
and rotating the main
command dial until the desired
setting is displayed in the
control panel, viewfinder or
information display.
Modes Options
P, S, A, M Lo 1–Lo 0.3; 100–12800 in steps of 1 /
3
EV; Hi 0.3–Hi 2
% Auto
Other shooting
modes
Auto; Lo 1–Lo 0.3; 100–12800 in steps of 1 /
3
EV; Hi 0.3–
Hi 2
W ( S ) button Main command
dial
Control panel
Information display
Viewfinder