Maybe I'm misunderstanding something about my D810, I assume it has to do with my CF cards. I don't get the advertised buffer capacity of "47" at 12-bit, lossless compressed NEF, with these settings I only get "25", but at compressed I get "28". I'm using a Lexar Pro 800x, UDMA 7 CF card. I tried reformatting the card, switching settings, and even put in a slower no-name brand 600x CF card, and I get the same results. I'm assuming I will only get the larger buffer if I switch the SanDisk Extreme Pro cards, but I wanted to verify before driving myself crazy, because I missed a setting.