Canon EOS REBEL T2i 用户手册

115

Using AF to Focus

 

Press the shutter button halfway and 
the camera will focus the face 
covered by the <p> frame.

X

When focus is achieved, the AF point 
will turn green and the beeper will 
sound.

X

If focus is not achieved, the AF point 
will turn orange.

 

If a face cannot be detected, the AF 
point < > will be displayed and AF 
will be executed at the center.

 

Check the focus and exposure, then 
press the shutter button completely to 
take the picture (p.108).

 

If the focus is way off, face detection will not be possible. If the lens 
enables manual focusing even while the lens focus mode switch is set to 
<f>, turn the focusing ring to attain rough focus. The face will then be 
detected and <p> will be displayed.

 

An object other than a human face might be detected as a face.

 

Face detection will not work if the face is very small or large in the picture, 
too bright or too dark, titled horizontally or diagonally, or partially hidden.

 

The <p> focusing frame might cover only part of the face.

 

When you press the <

L

> button, the AF mode will switch to the Live mode 

(p.113). You can press the <S> key to move the AF point. Press the <

L

> 

button again to return to the u (face detection) Live mode.

 

Since AF is not possible with a face detected near the edge of the 
picture, the <p> will be grayed out. Then if you press the shutter button 
halfway, the center AF point < > will be used to focus.

COP

Y