Canon EOS 5DS Instruction Manual page 103

Group F
Autofocusing with only 47 points is possible. (Not possible with all 61
AF points.) All 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.
Group G
Autofocusing with only 33 points is possible. (Not possible with all 61
AF points.) All 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.
Lenses and Usable AF Points
: 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).
: 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).
103