Canon EOS-1 D X Mark II Instruction Manual page 116

3 Selecting AI Servo AF Characteristics
Case 5: For erratic subjects moving quickly in any direction
Default settings
• Tracking sensitivity: 0
• Accel./decel. tracking: 0
• AF pt auto switching: +1
If the subject moves even more dramatically up, down, left, or right, setting
[AF pt auto switching] to [+2] may give better results (p.120).
116
Even if the target subject moves
dramatically up, down, left, or right, the
AF point will switch automatically to
focus-track the subject. Effective for
shooting subjects that move dramatically
up, down, left, or right.
It is recommended to use this setting
with the following modes; AF point
expansion (manual selection
point expansion (manual selection,
surrounding points), Zone AF, Large
Zone AF, and Automatic selection AF.
With Single-point Spot AF or Single-point
AF mode, the tracking action will be the
same as with Case 1.
), AF