So, a lens is a mechanism for doing a significant amount of computation. All this does is move some of that computation from optics to software. If you take ou

So, a lens is a mechanism for doing a significant amount of computation. All this does is move some of that computation from optics to software. If you take out some of the optics from a real lens you get a blurry image too. That doesn't mean the remaining lenses aren't doing something useful -- or that the output is bad. It just needs further processing. Post-processing, you end up with interesting images. More examples: http://www.refocusimaging.com/gallery/ http://www.refocusimaging.com/gallery/