Lytro: The file sizes will be comparable to regular picture formats. Slightly larger, but not by an order of magnitude.

PCW: Will the focus-after-shooting technology work for just still images, or video as well?

Lytro: Video is entirely possible within the light field. It is on our long-term roadmap, but video capture will not be available in our first product.

PCW: How much distance does there need to be between focus depths in a scene in order for the camera to recognize them as different focus points?

Lytro: We aren't prepared to get into detail about the camera's specs at this time.