达盖尔银版是一种独特的图像，它可以再现相机镜头前微小的、无选择性的细节，而且是不可复制的。

The daguerreotype was a unique image that reproduced what was in front of the camera lens in minute, unselective detail and could not be duplicated.

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为了实现我在一部电影里看到的一个特效镜头，我曾经用一个玩具宇宙飞船和塑料恐龙来复制那个镜头，这让我觉得也许我可以学习这方面的知识并坚持下去。

To have a visual reminder of an effects shot I’d seen in a movie, I’d use a toy spaceship or plastic dinosaur and try copying the shot, which gave me a print that I could study and hold.

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对于大多数电影而言，这种镜头可以通过机械控制的摄影机完成，这可以为多镜头的场景复制出完全一致的移位效果。

For most films, this would be achieved by using machine-controlled cameras, which can replicate the exact same movement for multiple takes.

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