Canon EOS-1DX MARK II Settings Manual page 89

Group K
Single cross-type AF point available
You can carry out AF focusing with five points, but it is
not possible to manually select the points above, below,
to the left and right. The following AF area selection
modes are available: Single-point Spot AF, Single-point
AF, and AF point expansion (the points above, below,
left, and right).
f/5.6 and f/8support
(vertical-line focusing AF)
Major lenses in Group K
EF35-105mm F4.5-5.6
EF35-105mm F4.5-5.6 USM
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