This is pretty amazing—really. https://www.lytro.com/
Photograph without an eye for focus; shoot now, focus later. I’m curious to see this thing in action…it’s an exciting idea but I wonder what its limitations will be. I’m also excited/terrified of what it’s applications will be 20 years from now!
The samples on the site don’t appear to handle long focal distances very well, but for close fields it’s pretty interesting…and for the guts and glory of this camera and technique, check out the CEO’s dissertation.