Nikon D3300 Kit Owner's Manual

Page of 541
118 P, S, A, and M Modes
Exposure Compensation
Exposure compensation is used to alter exposure from the value 
suggested by the camera, making pictures brighter or darker 
(
0 345). It is most effective when used with M (Center-
weighted metering) or 
N (Spot metering) (0 114).
–1 EV
No exposure 
compensation
+1 EV