Nikon D700 User Manual page 48

Exposure compensation can be set to values between -5 EV
(underexposure) and +5 EV (overexposure) in increments of 1/3 EV.
In general, choose positive values to make the subject brighter,
negative values to make it darker.
-1 EV No exposure +1 EV
compensation
At values other than _+0,the 0 at the center
of the electronic analog exposure displays
will flash and a [] icon will be displayed in
the control panel and viewfinder.
Normal exposure can be restored by setting
exposure compensation to _+0. Exposure
compensation is not reset when the camera is turned off.
[] See Also
For information on choosing the size of the increments available for
exposure compensation, see Custom Setting b3 (Exp comp/fine tune, pg.
292). For information on making adjustments to exposure compensation
without pressing the [] button, see Custom Setting b4 (Easy exposure
compensation, pg. 293).
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