E: Changing The Af Mode - Canon Rebel T2i EOS 550D Instruction Manual

E: Changing the AF ModeN
You can select the AF mode suiting the shooting conditions or subject. In
the Basic Zone modes, the optimum AF mode is set automatically.
One-Shot AF for Still Subjects
Suited for still subjects. When you press the shutter button
halfway, the camera will focus only once.
When focus is achieved, the dot inside the AF point achieving focus
lights briefly in red, and the focus confirmation light <o> in the
viewfinder will also light.
With evaluative metering (p.86), the exposure setting will be set at
the same time focus is achieved.
While you hold down the shutter button halfway, the focus will be
locked. You can then recompose the shot if desired.
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On the lens, set the focus mode
1
switch to <AF>.
Press the <ZE> button.
2
[AF mode] will appear.
Select the AF mode.
3
Press the <U> key to select the AF
mode, then press <0>.
Focus the subject.
4
Aim the AF point over the subject and
press the shutter button halfway. The
camera will then autofocus in the
selected AF mode.