Practical applications of Lytro cameras?
I'm really interested in the idea of Lytro's light field cameras, especially their latest invention: the Lytro Illum, which looks like an EVIL style camera (electronic viewfinder, interchangeable lens). However, in this case, the lens isn't interchangeable. It boasts a 30 - 250mm f/2.0 lens. Pretty impressive, all things considered!
Anyway, you can see some interesting uses of focusing between objects in a photograph with the Lytro camera right here: https://www.youtube.com/watch?v=mx0HMY7E9R0
It's neat and I love that the camera is finding a way to capture a lot of data at once (I also love the pseudo 3D effect when the pan through various images), but I'm struggling to find a more practical use case for this. I suppose I can see it from a sort of art / documentary perspective.
Maybe I'm being an old curmudgeon, but what sorts of use cases could you see for this camera?