常亮模式：时间一直显示着。

Always mode: Time has been displayed.

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在H.D.R模式下，相机会连续捕捉三张照片：一张偏亮，一张正常，一张偏暗，然后将这三张照片组合成一张。

In H.D.R. mode, the camera snaps three shots in succession: one that favors the brights, one normal, one that favors the darks - and combines them.

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因此，若环境相当亮，又要使用TTL模式，就需要设置负的FOLC降低闪光灯输出，避免过曝。

So, if the ambient light is fair or bright, and you want to use the plain TTL mode, you should reduce the flash power by setting some negative FOLC to avoid overexposure.

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