Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 864)

: Metering and AF Start
Pressing the button assigned to this function starts metering and AF.
* 1: When the < > or < > button is assigned, pressing the < > button with the
setting screen displayed enables you to set detailed AF settings. Pressing the < > or
< > button as you shoot starts AF under the configured settings.
AF start position
When set to [ Registered AF point ], pressing the < > or < > button switches
to the registered AF point.
Registering the AF point
1.Set the AF area selection mode to one of the following: Spot AF, 1-point AF, Expand
AF area: , Expand AF area: Surround, or Auto selection AF. Zone AF and Large
Zone AF are not available.
2.Select an AF point manually.
3.Hold down the <
> button, then press the < > button, after which the camera
beeps and registers the AF point. The registered AF point blinks unless you have
set the AF area selection mode to an option other than Auto selection AF.
Note
The following information is displayed when an AF point is registered.
• Auto selection AF: (HP: home position)
• Spot AF, 1-point AF, Expand AF area: (manual selection), or Expand AF
area: Surround: (center)/ (other than center)
To clear registered AF points, hold down the < > button and press the
< > button.
AI Servo AF characteristics ( )
Pressing the < > or < > button starts AF with characteristics of your
specified case [ Case * ].
AF operation ( )
Pressing the < > or < > button starts AF with your specified AF operation.
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