Lionel, he must be referring to "integral photography". This is a fascinating topic in itself!
Indeed, I'd like to attempt it myself, but the lens sheets are fairly expensive, though not completely prohibitive. It requries no camera, because each "fly's eye" is a little lens that makes a tiny image. All of these tiny images, after being developed and placed back exactly where they were under the lens sheet, will be magnfied by the fly's eye's dependant on the angle at which you're looking at it. Thus each eye will see something different... the foundation for stereoscopy! That might not be the easiest to understand explanation, but I got excited.