Canon ELPH 510 HS ユーザーズマニュアル

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Changing the AF Frame Mode
94
A single AF frame will be used. This is effective for focusing on a specific 
point.
Changing the Composition with the Focus Lock
While you keep the shutter button pressed halfway, the focus and exposure 
are locked. You can now recompose and shoot. This is called Focus Lock.
Focus.
z
Center the subject you want in focus, and 
press the shutter button halfway.
z
Confirm that the AF frame on the subject is 
green.
Recompose.
z
Keep the shutter button pressed halfway 
and move the camera to recompose the 
scene.
Shoot.
z
Press the shutter button fully.
Fixed Frame
You can reduce the AF frame size
Touch 
H, then n to choose the 4 tab, then touch [AF Frame Size] 
and choose [Small].
The AF frame is set to [Normal] when using the digital zoom (p. 53) or digital 
tele-converter (p. 92).
If the camera cannot focus when you press the shutter button halfway, the 
AF frame will turn yellow and 
 will appear.
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