Canon EOS-1D X Af Setting Manualbook page 50

Utilizing the Switching AF Area selection modes
Instantly switching AF Area selection modes with a single button
[Register/recall shooting function] can instantly change settings at the touch of a button
Change AF Area instantly
Original AF point, with Single Point AF
Instantly change exposure mode, ISO, AI Servo AF detail settings, the active AF point and/or AF Area setting — by simply assigning
a series of memorized shooting functions to the AF-ON or AE Lock buttons... just press the button and totally change how the EOS-
1D X operates, even in the middle of a high-speed shooting sequence.
Use together with [AF Area selection mode] one-button switching for enhanced convenience
New!
Link the starting point for Automatic AF point
Firmware
selection with the last manually-selected AF point
[Manual selection: 1 point AF]
It's now your choice: link the starting AF point for Automatic AF point selection
to the last manually-selected AF location or keep them independent
[Initial AF pt. selected]:
Start point for Automatic AF point selection (in AI Servo AF) is independent of last manually-selected
point
[Manual AF pt]:
50 50
By pressing the
assigned button
New: [Initial AF pt, AI Servo AF] in [AF4] menu:
[Manually set points in
AF point as the starting point with Automatic AF point selection
Seamless AF Area transition to Automatic AF point selection, when shooting moving
subjects with AI Servo AF. The last manually-selected AF point location can be the
starting point for focus-tracking with Automatic AF point selection.
Instantly changed to Zone AF,
and registered "AF start position"
] option uses last manually-selected
[Auto selection: 61 point AF]