Canon EOS-1DX Instruction Manual page 344

85: Custom Controls
Assignable Functions to Camera Controls
Metering and AF start
AF stop
Switch to registered AF function
ONE SHOT z AI SERVO
Switch to registered AF point
AF point direct selection
Select AF point, + OzS
( during metering)
Metering start
AE lock
AE lock (while button pressed)
AE lock (hold)
FE lock
Set ISO speed
Set ISO speed (hold button, turn
Set ISO speed (
Set ISO speed Ozg
( during metering)
Shutter speed setting in M mode
Aperture setting in M mode
Exposure compensation (hold button,
turn
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Function
during metering)
)
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