Canon MARK IV User Manual (en)

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131
The AF modes available are [Live mode], [u Live mode] (face 
detection, p.132), and [Quick mode] (p.136).
If you want to achieve precise focus, set the lens focus mode switch to 
<MF>, magnify the image, and focus manually (p.138).
Select the AF mode.
 
While the Live View image is 
displayed, press the <o> 
button. (9)
 
Turn the <6> dial to select the AF 
mode.
d
: Live mode
c
: u Live mode
f
: Quick mode
The image sensor is used to focus. Although AF is possible with the 
Live View image displayed, the AF operation will take longer than 
with the Quick mode
. Also, achieving focus may be more difficult than 
with the Quick mode.
1
Move the AF point.
 
Use <9> to move the AF point < > 
to where you want to focus. 
(It cannot go to the edges of the 
picture.)
 
If you press <9> straight down, the 
AF point will return to the image 
center.
Using AF to Focus
Selecting the AF Mode
Live Mode: d
This can also be set with the AF mode menu option explained on the 
preceding page.
AF point
COP
Y