Canon EOS-1DX MARK II Settings Manual page 75

Track and focus on the
athlete's face with [EOS
iTR AF (Face priority)]
A p h o t o o f a n a t h l e t e
photographed in the center of
the frame as she leaps during
the long-jump.
It was shot using [Auto
selection AF] with EOS iTR AF
s e t t o [ E O S i T R A F ( F a c e
priority)]. In this way, even
when the location of a person's
face moves around the screen
erratically, it is possible to track
the subject while precisely
selecting the subject with [EOS
iTR AF (Face priority)].
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