Canon A3100ISRED 用户手册

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页码 148
81
Shooting with the AF Lock
The focus can be locked. After locking the focus, the focal distance will not 
change even when you release your finger from the shutter button.
1
Lock the focus.
Keep the shutter button pressed halfway 
and press the 
q button.
X
The focus locks and 
% appears on the 
screen.
If you release your finger from the shutter 
button and press the 
q button again, % will 
disappear and the focus will unlock.
2
Compose the scene and shoot.
Changing the Metering Mode
You can change the Metering mode (brightness measuring function) to 
match the shooting conditions.
1
Choose the Metering mode.
After pressing the 
m button, press the op 
buttons to choose 
.
2
Choose an option.
Press the 
qr buttons to choose an option, 
then press the 
m button.
X
The setting will appear on the screen.
Evaluative
Suitable for standard shooting conditions, including back lit 
shots. Automatically adjusts the exposure to match the 
shooting conditions.
Center Weighted 
Avg.
Averages the light metered from the entire frame, but gives 
greater weight to the center.
Spot
Only meters within the 
 (Spot AE Point frame).
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