Canon EOS-1DX MARK II Settings Manual page 68

A broad area of active AF points, for focus on
a variety of subjects
Large
Zone AF
Photo
Touch to
enlarge
image
Vertically shot photo of a motorcycle coming towards
the camera around a corner in a motorsport event.
The bottom area of [Large Zone AF] was selected,
and the photo shot with the background composing a
large portion of the upper part of the screen.
68