Refocusing the picture after the fact isn't just about being able to focus "right" after the fact, so it's not fair to just compare with "focusing right the first time". With normal cameras, when you focus, you lose information, and it is simply not possible to do what they do in their demos, namely, to capture a continuous range of fields of view. (With several cameras or more than one lens, you can capture multiple discrete fields of view, but not a continuous range like this.) This is only possible because they're capturing 3-dimensional information about where each object is.
Granted their demo isn't impressive, but they're underutilizing their technology, and honestly I can't think of a better demo either, but don't be misled. This light field camera is capturing far more information. Meaningful information. I wonder if it's possible to like, create 3D models of objects in these images? That would probably be more "computational camerawork". What's impressive that that could be done after the fact.
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Refocusing the picture after the fact isn't just about being able to focus "right" after the fact, so it's not fair to just compare with "focusing right the first time". With normal cameras, when you focus, you lose information, and it is simply not possible to do what they do in their demos, namely, to capture a continuous range of fields of view. (With several cameras or more than one lens, you can capture multiple discrete fields of view, but not a continuous range like this.) This is only possible because they're capturing 3-dimensional information about where each object is.
Granted their demo isn't impressive, but they're underutilizing their technology, and honestly I can't think of a better demo either, but don't be misled. This light field camera is capturing far more information. Meaningful information. I wonder if it's possible to like, create 3D models of objects in these images? That would probably be more "computational camerawork". What's impressive that that could be done after the fact.