Canon EOS 550D Instruction Manual page 24

Using AF to Focus
Selecting the AF Mode
The AF modes available are [Live mode], [_ Live mode] (face
detection, p.114), and [Quick mode] (p.118).
if you want to achieve precise focus, set the tens focus mode switch to
<MF>, magnify the image, and focus manually (p.120).
Select the AF mode.
_ Under [_= Live View function
settings], select [AF mode].
_ While the Live View image is
displayed, you can press the <[_[]>
button to select the AF mode on the
Quick Control screen.
Live Mode: AF_
The image sensor is used to focus. Although AF is possible with the
Live View image displayed, the AF operation will take [onger than
with the Quick mode. Also, achieving focus may be more difficult than
with the Quick mode.
AF point
Display the Live View image.
#_ Press the <_> button.
_y,, T he Live View image will appear on
the LCD monitor.
_y,, T he AF point <_/> will appear.
Move the AF point.
_ Press the <,_', > key to move the AF
point to where you want to focus (it
cannot go to the edges of the picture).
_ To return the AF point to the center,
press the <_> button.
113