按压向上向下按钮，以选择预对焦或ae锁定。
Press the updown buttons to select ether preview or AE lock.
当相机的AF - ON按钮按下后显示屏关闭并且可以用多选择器选择对焦区域。
When the camera's AF-ON button is pressed, the monitor turns off and a focus point can now be selected using the multi selector.
该GF1系列还具有快速自动对焦功能，开始注重只要用户目标的相机-没有等待用户按下快门按钮按下一半。
The GF1 also has a Quick AF function that begins focusing as soon as the user aims the camera - no waiting for the user to press the shutter button halfway.
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