Справочник Пользователя для Canon 9128B016

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AF Area Selection ModesN

The AF area is divided into three focusing zones (left, center, and right) 
for focusing. Since the focusing area is larger than with Zone AF, it is 
superior in focusing on the subject. Since auto selection AF is used, it is 
superior to single-point AF or AF point expansion in achieving focus, 
making it effective for moving subjects.
However, since it is inclined to focus on the nearest subject, focusing on 
a specific target may be more difficult than with single-point AF.
The AF point(s) achieving focus is displayed as <S>.

The Area AF frame (entire AF area) is used to focus. This mode is set 
automatically in the <A> mode.

With One-Shot AF, pressing the shutter button 
halfway will display the AF point(s) <S> that 
achieved focus. If multiple AF points are displayed, 
it means they all have achieved focus. This mode 
tends to focus on the nearest subject.

With AI Servo AF, you can set the AI Servo AF’s 
starting position with [Initial AF pt, 

AF] (p.127). As long as the Area AF frame can 
track the subject during shooting, focusing will 
continue.
The AF point(s) achieving focus is displayed as 
<S>.