Ai Servo Af For Moving Subjects - Canon EOS Rebel SL2 EOS 200D Instruction Manual

f: Changing the Autofocus OperationN

AI Servo AF for Moving Subjects

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 point selection (p.119) is automatic, the camera first
uses the center AF point to focus. During autofocusing, if the subject
moves away from the center AF point, focus tracking continues as
long as the subject is covered by another AF point.
With AI Servo AF, the beeper will not sound even when focus is achieved.
Also, the focus indicator <o> in the viewfinder will not light up.
AI Focus AF for Switching the AF Operation Automatically
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 in focus 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.
When focus is achieved with AI Focus AF with the Servo operation active,
the beeper will continue beeping softly. However, the focus indicator <o> in
the viewfinder will not light up. Note that focus lock is not possible in this
case.
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