Canon EOS-1DX Af Setting Manualbook page 39

Examples where the [-] setting is more
effective
Sports with far-away subjects that experience
relatively minor changes in speed, and
obstructions that often pass in front of the
subject
[Accel./decel tracking] option [-1/2] is a new parameter
for shooting in situations where far-away subjects
e x p e r i e n c e m i n o r c h a n g e s i n s p e e d , a n d m a n y
obstructions pass by in the foreground. Specifically, this
setting is effective for sports with wide playing fields,
such as soccer, when you want to capture action on the
39