Canon EOS 5D Mark IV L-series Zoom Lens Kit Owner's Manual

111

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 and all 
the AF points in the selected zone are used for the automatic AF point 
selection, it is superior to single-point AF and AF point expansion in 
tracking the subject, and it is effective for moving subjects.
However, since it is inclined to focus on the nearest subject, focusing on 
a specific target may be more difficult.
The AF point(s) achieving focus is displayed as <S>.

The Area AF frame (entire AF area) is used to focus. The AF point(s) 
achieving focus is displayed as <S>.

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 
initial position with [f4: Initial AF pt, 

Servo AF] (p.146). As long as the Area AF frame 
can track the subject during shooting, focusing 
will continue.