A gravitational lens is formed when light is bent by a massive object.
引力透镜现象就是光被巨大质量物体弯曲的现象。
Some might say it's a lens flare.
也许有人说这只是镜头的反光。
Photo Tip: it's always wise to have a good chamois lens cleaner with you.
拍照提示：时刻备有羊毛的镜头清洁布，这是很明智的选择。
Prepare to be patient, and have a good telephoto lens.
准备好耐心和一个长焦镜头，好好享受这奇妙之旅吧。
Buy the body and then buy a faster lens separate.
只买机身，然后另外购买一个高速镜头.（译者：一般指允许进光更多而提高快门速度的，大光圈镜头。
If you are still wearing glasses, why not give it a try with contact lens?
如果你现在还在戴眼镜，为什么不试着用个水晶体。
考虑使用定焦镜头。
It is natural that a person with poor eyesight should wear glasses or contact lens.
近视的人配戴眼镜或是隐形眼镜是很自然的事情。
She believes her study has helped her see the world through a more thoughtful lens.
她相信，她的专业帮助她更深入地审视世界。
为什么用隐形眼镜呢？
I want a telephoto lens. Do you have one here?
我想要一个远摄镜头，你们有吗？
First we must find the focus of a lens.
首先我们需要找到透镜的焦点。
一门语言是一个镜片。
You have to put a deep red filter on the lens to increase the contrast.
你还需要在镜头上加一块深红色的滤光镜来提高反差。
好啦，让我们试一次镜头吧。
When shown through a special lens the distorted picture spreads out again .
当通过一个特殊镜头放映时，受到畸变的图象又重新展开。
Pardon me. C: I want a telephoto lens.
请你再说一遍。我想要一个远摄镜头。
When he talks about a solution for the problem, Grey Lens Man is quite frank.
谈到问题的解决之道，灰镜人很坦白。
No one had ever made a lens in this way before.
没有人以往任何时候都作出了镜头，在这之前的方式。
Focal length: The distance between the centre of a lens and its principal focus.
焦距：镜头中心与其主焦点的距离。
I need to wear a lens, for my sight is blur.
我需要配一副眼镜，因为我的视力模糊。
Panasonic's "Lens Memory" system is a clever and exciting solution to this problem.
松下的“镜头记忆”系统是一个聪明的和令人兴奋的解决这个问题。
Believe it or not, this new digital camera has a wide Angle lens.
不管你信不信，这新的数位相机有广角镜头。
I took a few shots and wow... I really should never have touched that lens.
我用它试拍了几张，哇…我真的从来没有接触过这个镜头。
这是个长焦距镜头。
这是个长焦距镜头。
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