Canon PowerShot ELPH 170 IS Blue 手册

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页码 216
97
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 Contents
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 Chapter Contents
• 
Focusing may not be possible in some shooting conditions.
• 
In low-light conditions, Servo AF may not be activated 
(AF frames may not turn blue) when you press the shutter 
button halfway. In this case, the focus and exposure are 
set according to the specified AF frame mode.
• 
If adequate exposure cannot be obtained, shutter speeds 
and aperture values are displayed in orange. Release the 
shutter button, and then press it halfway again.
• 
AF lock shooting is not available.
• 
[AF-Point Zoom] on the [
4] tab is not available.
• 
Not available when using the self-timer (
Still Images
Magnifying the Area in Focus
You can check the focus by pressing the shutter button halfway, 
which will enlarge the portion of the image in focus in the AF frame.
1
  Configure the setting.
z
z
Press the <
n> button, 
choose [AF-Point Zoom] on the 
[
4] tab, and then choose [On] 
(
2
  Check the focus.
z
z
In [Face AiAF] AF mode, the 
face detected as the main 
subject is magnified when 
the shutter button is pressed 
halfway. In [Center] AF mode, 
the AF frame in the center is 
magnified.