然后你有大约16秒时间重新构图进行拍摄，闪光灯的曝光量将保持在锁定值，不会因重新构图后曝光量改变而破坏拍摄结果。

You then have about 16 seconds to recompose and take the shot thereby guaranteeing the exposure you set and not have the camera reset a new exposure ruining your shot.

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你还不得不等到那长时间的曝光完毕后才可以收工。

You have to wait for its long exposure to finish, as well.

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这种金属板在曝光后可以产生能被转移到纸上的图像。

This metal plate is exposed to light and creates an image which is then transferred to paper.

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