A Full Auto Techniques (Scene Intelligent Auto) - Canon EOS Rebel SL2 Mode D'emploi

A Full Auto Techniques (Scene Intelligent Auto)

Recomposing the Shot
Depending on the scene, positioning the subject toward the left or right to
include a balanced background will result in a picture with better perspective.
In the <A> mode, pressing the shutter button halfway to focus on a
still subject will lock the focus on that subject. Recompose the shot
while keeping the shutter button pressed halfway, and then press the
shutter button completely to take the picture. This is called "focus lock".
Focus lock is also possible in other Basic Zone modes (except <8:
5C>).
Shooting a Moving Subject
In the <A> mode, if the subject moves (distance to camera changes)
during or after focusing, AI Servo AF will take effect to focus on the
subject continuously. (The beeper will continue beeping softly.) As long
as you keep the AF point positioned over the subject while pressing the
shutter button halfway, focusing will be continuous. At the decisive
moment, press the shutter button completely to take the picture.
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