Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 450)

7 Custom Controls
450
When you press the button assigned to this function, metering and AF
are performed.
*1: When assigned to the < p > or < A > button,
pressing the < B > button while the setting
screen is displayed will enable you to set the
detailed AF settings. When shooting, pressing the
<
p > or < A > button will perform AF as it was
set.
AF start position
When [ Registered AF point ] is set, you can press the < p > or
< A > button to switch to the registered AF point.
Registering the AF Point
1. Set the AF area selection mode to one of the following: Single-point
Spot AF (manual selection), Single-point AF (manual selection), AF
point expansion (manual selection
), AF point expansion (manual
selection, surrounding points), or Automatic selection AF. Zone AF
and Large Zone AF cannot be selected.
2. Select an AF point manually.
3. Hold down the <
S > button, then press the < i > button. A beep
will sound, and the AF point will be registered. If the AF area
selection mode is set to any setting other than Automatic selection
AF, the registered AF point will blink.
: Metering and AF start
When the AF point is registered, the following will be displayed:
• Automatic selection AF: HP (HP: Home Position)
• Single-point Spot AF (manual selection), Single-point AF (manual
selection), AF point expansion (manual selection ), AF point
expansion (manual selection, surrounding points):
SEL (Center),
SEL HP (Off center)
To cancel the registered AF point, hold down the < S > button, then
press the < O > button. The registered AF point will also be canceled if
you select [ 5 4: Clear all camera settings ].