This Lens Is Bigger Than Any Camera Lens Ever [Astronomy]

The Canon 5200mm super telephoto lens may be the world's largest camera lens, but it's no match for lenses the size of an entire galaxy, so massive that they deform the light of objects behind them. They're called gravitational lenses. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/LZoEN4xv6Ws/this-lens-is-bigger-than-any-camera-lens-ever

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