Canon EOS 800D, Basic Instruction Manual

Page: 97 / 676

95
f
: Changing the Autofocus Operation
N
Suited for still subjects. When you
press the shutter button halfway, the
camera will focus only once.

The AF point that achieves focus is
displayed, and the focus indicator
<
o
> in the viewfinder will also light
up.

With evaluative metering, the
exposure setting will be set at the
same time focus is achieved.

While you hold down the shutter button halfway, the focus will be
locked. You can then recompose the shot if desired.
This AF operation is suited for moving subjects when the focusing
distance keeps changing. While you hold down the shutter button
halfway, the camera will keep focusing on the subject
continuously.

The exposure is set at the moment the picture is taken.

When the AF area selection mode (p.96) is set to Automatic
selection AF, focus tracking will continue as long as the Area AF
frame covers the subject.
AI Focus AF switches the AF operation from One-Shot AF to AI
Servo AF automatically if a still subject starts moving.

After the subject is focused in One-Shot AF, if the subject starts
moving, the camera will detect the movement, change the AF
operation automatically to AI Servo AF, and start tracking the moving
subject.
One-Shot AF for Still Subjects
Focus indicator
AF point
AI Servo AF for Moving Subjects
AI Focus AF for Switching the AF Operation Automatically