Canon 1D X - Manual (Page 329)

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3 Custom Function Settings
C.Fn5: Operation
Dial direction during Tv/Av
Normal
Reverse direction
You can reverse the dial’s turning direction when setting the shutter
speed and aperture.
In the <a> shooting mode, the turning direction of the <6> and <5>
dial will be reversed. In the other shooting modes, the turning direction
of only the <6> dial will be reversed. The <5> dial’s turning direction
will be the same for the <a> mode and for setting the exposure
compensation.
Av setting without lens
You can set whether the aperture can still be set when no lens is attached
to the camera.
OFF: Disable
ON: Enable
You can set the aperture with the camera even while no lens is attached.
This is convenient for studio photography when the aperture is already
determined, as you can set the aperture beforehand.
Multi function lock
When the power switch is set to <R>, it will prevent the <6>, <5>,
and <9> from accidentally changing a setting.
Select the camera control(s) you want to lock when the power switch is set
to <R>, then press <0> to append a checkmark <X> and select
[OK].
6
Main Dial
The Main Dial and vertical-grip Main Dial will be locked.
5 Quick Control Dial
The Quick Control Dial will be locked.
9Multi-controller
The Multi-controller and vertical-grip Multi-controller will be locked.
COP
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