Nikon COOLPIX 5700 Manual page 140

Adjusting Monitor Brightness: Brightness
This option controls monitor brightness. Press the
multi selector up or down to increase or decrease the
brightness of the monitor or viewfinder. Changes are
immediately visible in the center of the display.
Adjusting Monitor Tone: Hue
This option controls the hue (tone) of the monitor. Press
the multi selector up to give the monitor or viewfinder
display a blue cast, down to give a red cast. Changes
are immediately visible in the center of the display.
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