It might be possible to compress the stream with lossless compression, but not very probable. Compession would be around 1:2 The full d800 raw stream is 2240x1260 and around 100mb/s (if it also turns out to be 12bit), but it also has a DX crop mode (~1600x900), which is 60mb/s so this probably will be the first usable raw mode. 2240x1260 compressed raw @60mb/s would be great