Nikon D5 User Manual page 31

A
LCD Illuminators
Rotating the power switch toward D
activates the backlights for the
buttons and control panels, making it
easier to use the camera in the dark.
After the power switch is released, the
backlights will remain lit for a few
seconds while the standby timer is
active or until the shutter is released
or the power switch is rotated toward D again.
D
The Control Panel and Viewfinder Displays
The brightness of the control panel and viewfinder displays varies with
temperature, and the response times of the displays may drop at low
temperatures. This is normal and does not indicate a malfunction.
Power switch
X
9