Ok, so the Arri Alexa records @ 2K RAW. Everyone and their mother (RED guys too!) are sooooo obsessed w/ 4K for the big screen. Just read in American Cinematographer that the new film "Prom" (not my kinda film, but i'll take my daughter) was shot with the Alexa @ 2K. Im very interested to see how this looks at my 4K Digital Proj. cinema.