Canon PowerShot SX620 HS Black 手册

61

This mode helps avoid missing shots of subjects in motion, because the 

camera continues to focus on the subject and adjust the exposure as long 

as you press the shutter button halfway.

 

●

Press the [

] button, choose [Servo 

AF] on the [ ] tab, and then choose [On] 

(= 25).

 

●

The focus and exposure are maintained 

where the blue AF frame is displayed 

while you are pressing the shutter button 

halfway.

 

●

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 optimum exposure cannot be obtained, the shutter speed and 
aperture value are displayed in orange. Release the shutter 
button, and then press it halfway again.

 

●

[AF-Point Zoom] on the [

] tab (= 25) is not available.

 

●

One AF frame is displayed in the center. Effective for reliable focusing.

 

●

A yellow AF frame is displayed with [ ] if the camera cannot 
focus when you press the shutter button halfway.

 

●

To reduce the AF frame size, press the [

] button and set 

[AF Frame Size] on the [

] tab to [Small] (= 25).

 

●

The AF frame size is set to [Normal] when you use the digital 
zoom (= 34) or digital tele-converter (= 59).

 

●

To compose shots so that subjects are positioned at the edge or 
in a corner, first aim the camera to capture the subject in an AF 
frame, and then hold the shutter button halfway down. As you 
continue to hold the shutter button halfway, recompose the shot 
as desired, and then press the shutter button all the way down 
(Focus Lock).

 

●

The AF frame position is enlarged when you press the shutter 
button halfway with [AF-Point Zoom] (= 40) set to [On].