Nikon D100 - Manual (Page 95)

Taking Photographs—Exposur
e
Controlling How the Camera Sets Exposure
83
Long Time-Exposures
At a shutter speed of , the shutter will remain open while the shutter-release
button is held down. Note that if the shutter is open for more than approximately 1 /
2
s
at any setting, “noise” in the form of randomly-spaced, brightly-colored pixels may
appear in the final photograph.
Electronic Analog Exposure Display
The electronic analog exposure display shows whether the photograph would be un-
der- or over-exposed at current settings. Depending on the option chosen for Custom
Setting 9 (EV Step), the amount of under- or over-exposure is shown in increments of
1 /
3
EV or 1 /
2
EV. If the limits of the exposure metering system are exceeded, the elec-
tronic analog exposure display will flash.
The electronic analog exposure display is not shown when shutter speed is set to .
4—Long Exp. NR ( 149)
To reduce noise at shutter speeds of about 1 /
2
s or slower, select ON for Custom Setting
5. Note that this increases the time needed to save photographs to the memory card.
9—EV Step ( 151)
This option controls whether changes to shutter speed and aperture are made in incre-
ments equivalent to
1 /
3
EV (the default setting) or 1 /
2
EV.
13—Command Dial ( 154)
This option can be used to reverse the roles of the command dials so that the sub-
command dial controls shutter speed, while the main command dial controls aperture.
Custom Setting 9 set to “1/3 Step” Custom Setting 9 set to “1/2 Step”
Optimal exposure Optimal exposure
Underexposed by 1 /
3
EV Underexposed by 1 /
2
EV
Overexposed by more than 2 EV Overexposed by more than 3 EV