High Quality Content by WIKIPEDIA articles! The Arri Alexa is a film-style digital motion picture camera system made by Arri first introduced in April 2010. The camera marks Arri`s first major transition into digital cinematography after smaller previous efforts such as the Arriflex D-20 and D-21. It features modularity, PL mount lenses, a Super 35 sized CMOS sensor shooting up to 2880 x 2160 resolution and supports uncompressed video or proprietary raw (ARRIRAW) data.