The Number And Placement Of Cross-Type Points When Using F/5.6 Lenses; 61-Point Af - Canon EOS-1DX MARK II Settings Manual

61-point AF (3)

The number and placement of
cross-type points when using
f/5.6 lenses
The majority of lenses can make use of the
central 21-point cross-type AF
With the exception of a small group of lenses (groups G
and H), almost all lenses that have a maximum aperture
up to f/5.6 are included in Group F, and can use all 61
AF points, including the 21-point cross-type AF (f/5.6
cross-type) in the central area. Many f/2.8 maximum
aperture large aperture telephoto lenses when used with
the various EF 2x Extenders will fit into this group.
EF100-400mm F4.5-5.6L IS II USM
EF70-300mm F4-5.6L IS USM
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