In a weird way, if you can capture enough of the light field over time (an insane amount of data by the way) you can "go back" and get whatever picture you want. Which has the potential of allowing complete novices to grab the raw data with some local sensor, and to out source the 'picture taking' to someone who can look at it and return the picture that they should have taken. I know, its crazy talk and off the wall, but my friends in computational circles say that its no more crazy to them than a 1TB hard drive possibility was to me back in 2000.