Nikon D100 User Manual download pdf (Page 95)

Taking Photographs—Exposure

Controlling How the Camera Sets Exposure

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

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

EV or

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

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

EV (the default setting) or

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

EV Underexposed by

Overexposed by more than 2 EV Overexposed by more than 3 EV

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Nikon D100 User Manual Page 95