Press the updown buttons to select ether preview or AE lock.
按压向上向下按钮，以选择预对焦或ae锁定。
The AE lock mode locks the exposure value for precise exposure metering.
自动曝光锁定模式能锁定精确曝光测定时的曝光值。
Programmed auto exposure, Aperture Priority Auto and Shutter Priority Auto, Manual exposure. ; AE lock.
自动曝光，程序自动曝光P（可进行程序微调），光圈优先（A），快门优先（S），手动曝光（M）
If the preview AE lock button is kept pressed while shooting, it is possible to shoot repeatedly with the locked exposure value.
拍摄时，如果一直按住预景深自动曝光锁定按钮，相机就能以锁定的曝光值重复拍摄。
If the preview AE lock button is kept pressed while shooting, it is possible to shoot repeatedly with the locked exposure value.
拍摄时，如果一直按住预景深自动曝光锁定按钮，相机就能以锁定的曝光值重复拍摄。
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