Nikon D780 DSLR Camera (Body Only) - Manual (Page 140)

94 Camera Controls
Use the E (exposure compensation) button to alter exposure
from the value suggested by the camera. Exposure
compensation can be used to make pictures brighter or darker.
D The E Button
The E button may be disabled in some shooting modes or when certain
conditions apply.
Adjusting Exposure Compensation
Hold the E button and rotate the main command dial.
• Higher values make the subject brighter, lower values darker.
• Normal exposure can be restored by setting exposure
compensation to ±0.0. Exposure compensation is not reset
when the camera is turned off.
The E Button
−1 EV No exposure
compensation
+1 EV