Nikon D800E User Manual page 15

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
(_ 115). Choose from values between -5 EV (underexposure) and
+5 EV (overexposure) in increments of 1/3 EV. In general, positive
values make the subject brighter while negative values make it
darker.
-1 EV No exposure +1 EV
compensation
To choose a value for exposure compensation, press the [] button
and rotate the main command dial until the desired value is
displayed in the viewfinder or control panel.
[] button Main command
dial
+0 EV -0.3 EV +2.0 EV
([] button pressed)
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