Canon 1D X - Manual (Page 81)

81
Lenses and Usable AF Points
Only 33 of the 61 AF points can be used for autofocusing. All of the AF
area selection modes are selectable. During automatic AF point
selection, the outer frame marking the AF area (Area AF frame) will be
different from 61-point automatic selection AF.
: Cross-type AF point. Subject
tracking is superior and high-
precision focusing is achieved.
: AF points sensitive to horizontal
lines.
: Disabled AF points (not displayed).
Only the AF point at the center of the viewfinder can be used for
autofocusing. Only the following AF area selection modes are
selectable: Single-point AF (Manual selection) and Single-point Spot AF
(Manual selection).
: Cross-type AF point. Subject
tracking is superior and high-
precision focusing is achieved.
: Disabled AF points (not displayed).
Group G
EF180mm f/3.5L Macro USM
EF180mm f/3.5L Macro USM
+ Extender EF1.4x
EF1200mm f/5.6L USM
Group H
EF35-105mm f/4.5-5.6 EF35-105mm f/4.5-5.6 USM
With lenses whose maximum aperture is smaller than f/5.6, AF is not
possible during viewfinder shooting. Also, AF with f is not possible
during Live View shooting and movie shooting.
COP
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