It was not that long ago when Lytro stunned to world with a camera that can re-focus in post production. This was quite a revolution as till then, the focus point was at the time when the shutter opened, was the focus pint and that was it. Millions of photos ruined by being almost in focus but not quite and Lytro aimed to change that. The hype, however, did not convert into a fed.
Now researchers in Saarland University in Saarbrücken, Germany extend the idea of Lytro to enable post production control of almost any possible aspect of photography including: exposure, light-temperature, focus and polarization. (and even a bit of spatial control) They call it The KaleidoCam. This video explains how it works.
