Nikon D700 User Manual page 47

Exposure compensation is used to alter exposure from the value
suggested by the camera, making pictures brighter or darker. It is
most effective when used with center-weighted or spot metering
(see page 112).
In exposure mode rl, only the exposure information shown in the
electronic analog exposure display is affected; shutter speed and
aperture do not change.
To choose a value for exposure compensation, press the [] button
and rotate the main command dial until the desired value is
displayed in the control panel or viewfinder.
[] button
Main command dial
+0 EV -0.3 EV +2.0 EV
(r_ button pressed)
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