Canon EOS-1D X Mark III Af Setting Manualbook page 34

Accel./decel. tracking.
[Accel./decel. tracking] is a tracking
setting for subjects that changes in
speed and move or stop suddenly.
[-1/-2] is effective for subjects with
minor speed changes.
Choose any [Case] and push
to select [Tracking sensitivity] and adjust level by turning
the Quick Control dial.
［-2］
［0］
〈 〉
button, then press
34 34
〈 〉