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Photographs record light. But there are different ways to do that. And apparently a new technology is able to record more information about the light in a scene: color, intensity and also vector direction of the rays. This means, among others elements, that pictures will not be a given and fixed data any more. You will be able to change focus, perspective and to shift from 2D to 3D AFTER having taken the photo.This "magic" camera is called Lytro. I learned about it in ben's blog.