Canon 1D X - Manual (Page 50)

50
Basic Operation
With [85: Multi function lock] set (p.329) and the power switch set to
<R>, you can prevent the current settings from changing due to
accidental movement of the Main Dial, Quick Control Dial, or Multi-controller.
Press the <U> button to turn the top
and rear LCD panel illumination on (9)
or off. During a bulb exposure, pressing
the shutter button completely will turn off
the LCD panel illumination.
If you press the <B> button a number
of times, the shooting settings will be
displayed.
Pressing the <Q> button enables Quick
Control of the shooting settings (p.51).
Press the <B> button again to turn off
the display.
R : Multi function lock
U LCD Panel Illumination
If the power switch is set to <R> and you try to use one of the locked
camera controls, <L> will be displayed in the viewfinder and on the top LCD
panel. [LOCK] will also be displayed on the shooting functions’ setting
screen.
Displaying Shooting Settings
COP
Y