Also see Radical Camera Lets You Pick What's Blurry And What's Not (WSJ)
But what if you could take a picture and refocus it after you had taken it? What if, just by clicking around a photo on your computer screen, you could choose which part of the image should be clear and which part should be blurry?
You can with a new camera called Lytro, and it’s astonishing. With a Lytro, you take a picture as you would with any camera, but the digital file it creates can be refocused after the fact.
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