Nikon D3400 Kit Owner's Manual

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116 P, S, A, and M Modes
To choose a value for exposure compensation, keep the 
E (N) 
button pressed and rotate the command dial until the desired 
value is selected in the viewfinder or information display.
Normal exposure can be restored by setting exposure 
compensation to ±0. In PSA, and M modes, exposure 
compensation is not reset when the camera is turned off. In 
scene and 
% modes, exposure compensation will be reset when 
another mode is selected or the camera is turned off.
+
E (N) button
Command dial
Information display
–0.3 EV
+2 EV
A
The Information Display
Exposure compensation options can also be 
accessed from the information display 
(
A
Mode M
In mode M, exposure compensation affects only the exposure 
indicator.
A
Using a Flash
When a flash is used, exposure compensation affects both background 
exposure and flash level.