根据镜头焦距的不同，图像会随之变形并且会影响最终的照片效果。
Depending on the lens' focal length, the image will deform and affect how the image looks in photos.
得益于它们的重量，MACS星系就像一个巨大的宇宙镜头，能放大，变形和弯曲经过它们的任何光，和引力透镜的效果一样。
Because of their heft, the clusters act like giant cosmic lenses, magnifying, distorting and bending any light that passes through them - an effect known as gravitational lensing.
这就是为什么广角镜头的摄像机容易让图像变形，并容易加强透视的原因。
That's why wide camera lenses tend to distort images and emphasize perspective.
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