Nikon D300 - Manual (Page 140)

114
Z
Exposure Compensation
Exposure compensation is used to alter exposure from the value
suggested by the camera, making pictures brighter or darker.
In exposure mode h, 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
E button and
rotate the main command dial until the
desired value is displayed in the control
panel or viewfinder.
E button
Main command dial
±0 EV
( E button pressed)
–0.3 EV
+2.0 EV