Canon EOS-1D X Instruction Manual page 378

Menu Settings
2: AF3 (Purple)
USM lens electronic MF
AF-assist beam firing
One-Shot AF release
priority
2: AF4 (Purple)
Auto AF point
selection: EOS iTR AF
Lens drive when AF
impossible
Selectable AF point
Select AF area
selection mode
AF area selection
method
Orientation linked AF
point
Initial AF point,
Servo AF
378
Enable after One-Shot AF / Disable after One-
Shot AF / Disable in AF mode
Enable / Disable / IR AF assist beam only
Release priority / Focus priority
Enable / Disable
Continue focus search / Stop focus search
61 points / Only cross-type AF points / 15
points / 9 points
Manual selection: Spot AF / Manual selection:
1 point AF / Expand AF area:
area: Surround / Manual selection: Zone AF /
Auto selection: 61 point AF
S → M-Fn button / S → Main Dial
Same for both vertical/horizontal / Separate AF
points: Area+point / Separate AF points: Point
only
Initial AF point selected /
AI
Manual
/ Expand AF
AF point
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