Lenses And Usable Af Points; Lens Group  - Canon EOS 77D Instruction Manual

Lenses and Usable AF Points

Although the camera has 45 AF points, the number of usable AF

points, AF point patterns, Area AF frame shape, etc. vary depending
on the lens used. The lenses are thereby classified into eight
groups from A to H.
Using a lens in Groups E to H will have fewer usable AF points.

Lens groups are listed on pages 141-144. Check which group your

lens belongs to.
The number of available AF points varies depending on aspect ratio

settings (p.156).
When you press the <S> or <B> button, the AF points at the position

indicated by the
Regarding lighting up or blinking of the AF points, see page 132.
For the latest "Lens Group Designations" information, check with the

Canon Web site, etc.
Some lenses may not be available in certain countries or regions.

Group A
Autofocusing with 45 points is possible. All the AF area selection modes
are selectable.
mark will blink. (The
: Dual cross-type AF point. Subject
tracking performance is superior and
the focusing precision is higher than
with other AF points.
: Cross-type AF point. Subject
tracking performance is superior and
high-precision focusing is achieved.
/ AF points will stay lit.)
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