The camera's raw format is indeed an entire light field (I've used nrp's tools, they're great). The camera import software creates a layered JPEG out of the raw

The camera's raw format is indeed an entire light field (I've used nrp's tools, they're great). The camera import software creates a layered JPEG out of the raw data for uploading and sharing, since the size and the amount of math involved in refocusing the raw image on the fly is significant.