[pclark]

I assumed the Lytro device was a proof of concept for the technology so they could embed the technology in cell phones. I cannot fathom a billion dollar use case outside of cell phones.

[beambot]

How about microscopes with post-exposure refocusing (at framerates!). That could be a HUGE biological research tool.

How about security cameras that can be focused onto various parts of the scene and stored for posterity?

[baq]

http://en.wikipedia.org/wiki/Light-field_photography

i'll refrain from saying more.