Canon EOS 77D, Instruction Manual

Page: 127 / 502

127
f
: Changing the Autofocus Operation
N
By default, the AF points light up in red when focus is achieved in low-
light conditions or on a dark subject. In Creative Zone modes, you can
set whether to have the AF points light up in red when focus is achieved
(p.406).
Under low-light conditions, when you press the shutter button halfway,
the built-in flash may fire a brief burst of flashes. This illuminates the
subject to help autofocusing.
AF Points Lighting Up in Red
AF-Assist Beam with the Built-in Flash

AF-assist beam will not be emitted from the built-in flash in <
7
>, <
3
>,
<
5
>, or <
8
:
C
> modes, or when [ Built-in flash firing ] is set to
<
b
> in <
A
>, <
C
>, <
2
>, <
4
>, <
8
:
qPF
>, or <
v
:
GWXZHc
> modes.

The AF-assist beam will not be emitted with AI Servo AF operation.

The built-in flash makes a sound when firing continuously. This is normal
and not a malfunction.

The effective range of the AF-assist beam emitted by the built-in flash is
approx. 4 meters / 13.1 feet.

In Creative Zone modes, when you raise the built-in flash with the <
D
>
button, the AF-assist beam will be emitted as necessary. Note that
depending on the setting for [
5: AF-assist beam firing ] under [
5
4:
Custom Functions (C.Fn) ], AF-assist beam will not be emitted (p.404).