Canon EOS 60D Instruction Manual page 40

Custom Function Settings _
0: Disable
1 : Enable
Prevents camera vibrations caused by the reflex mirror action that can
disturb shooting with super telephoto lenses or close-up (macro)
shooting. See page 125 for the mirror Iockup procedure.
C,Fn IV: OperationlOthers
Customizing camera controJs with the Quick Control screen (p.45)
The Custom Controls function on the Quick
Control screen is the same as the Custom
Functions below:
[AF and metering buttons] : C.Fn IV-I
[AF point selection method] : C.Fn Iit -2
[Assign SET button] : C.Fn IV -2
You can change the function assigned to the halfway pressing of the
shutter button, the AF start button, and the AE lock button. You can assign
the following functions to the buttons in one of ten combinations: Metering
& AF start, AE lock, metering start, AF stop, and no function.
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