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Majority of lenses can make use of the central
21-point cross-type AF
With the exception of a small group of lenses (groups F
and G), almost all lenses that have a maximum aperture
of f/4 or greater are included in Group E, and can use
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.
61-point AF (3)
The number and placement of
cross-type points used by the
f/5.6 lenses
EF100-400mm f/4.5-5.6L IS USM
EF70-300mm f/4-5.6L IS USM
