Nikon D100 - Manual (Page 151)

Shooting Options
Menu Guide—The Shooting Menu
139
Setting Sensitivity: ISO
The ISO menu controls sensitivity, the digital
equivalent of film speed. Options range from ISO
200 (roughly equivalent to a film speed of ISO 200)
to ISO 1600 (ISO 1600 equivalent) in steps equiva-
lent to
1 /
3
EV. Higher values of HI-1 (approximately
equivalent to ISO 3200) and HI-2 (approximately
equivalent to ISO 6400) are also available for situ-
ations in which high sensitivity is a priority. HI-1
and HI-2 are not available when ON is selected for Custom Setting 3 (ISO
Auto).
OK
ISO
200
250
320
400
SHOOTING MENU
HI-1/HI-2
Photos taken at settings of HI-1 and HI-2 will likely contain appreciable amounts of
noise. Use only to capture natural lighting under low light conditions or when a fast
shutter speed is required to prevent blurring. We recommend that image sharpening
(
140) be turned off at these settings to avoid heightening the effects of noise. Noise
can be reduced at shutter speeds of 1 /
2
s or slower by selecting ON for Custom Setting 4
(Long Exp. NR).
For more information on:
48 Sensitivity (ISO equivalency)