Canon EOS 77D Instruction Manual page 138

Lenses and Usable AF Points
Group B
Autofocusing with 45 points is possible. All the AF area selection modes
are selectable.
Group C
Autofocusing with 45 points is possible. All the AF area selection modes
are selectable.
Group D
Autofocusing with 45 points is possible. All the AF area selection modes
are selectable.
138
: Cross-type AF point. Subject
tracking performance is superior and
high-precision focusing is achieved.
: Cross-type AF point. Subject
tracking performance is superior and
high-precision focusing is achieved.
: AF points sensitive to horizontal
lines.
: Cross-type AF point. Subject
tracking performance is superior and
high-precision focusing is achieved.
: AF points sensitive to horizontal
lines.