一个镜头的基础定义是其焦距，图4图示出镜头焦距，视野，感应器大小，和工作距离间之关系。

A lens is primarily defined by its focal length. Figure 4 illustrates the relationship between the focal length of the lens, field of view, sensor size, and working distance.

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布里奇对决特里，一出票房好戏。在比赛前双方握手致意的时候，比赛场上的每处镜头都将对准这二位。

Bridge versus Terry, however, has become big box-office and every lens in the stadium will be trained on the pair when the pre-match opportunity for a handshake comes up.

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这出戏中有几处不同的取景镜头：尼克·福斯特的角色艾德说着酒吧荤段子要跟肖恩干杯。

There are several different takes of the scene where Nick Frost's character Ed attempts to cheer up Shaun by telling stories about the pub regulars.

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In the very next scene, the final scene, she's walking down the hallway in the hospital and she's sort of smiling and contented, she seemed sort of hopeful.

而下一个镜头，也就是最后一个镜头，她走在医院大厅里,嘴角却流露出一丝满意的微笑，她似乎又变得满怀希望。

麻省理工公开课 - 电影哲学课程节选