ALEXA 16:9

The first camera on the scene remains in the center of the family is the cornerstone of a modular and upgradeable system with a picture performance that's easy to manage, reliable, even in the most extreme environments and versatile enough to cover a wide range of workflow and budget requirements. Whether you intended production for film or television, ALEXA will help you tell your story exactly the way you think it should have, with images of stunning richness and detail.

Original ALEXA comes with a 16:9 sensor, original module that accepts two SxS SxS PRO to record ProRes or DNxHD in-camera. ARRIRAW recording is possible with an external recorder ..

http://www.arri.com/camera/digital_cameras/cameras/camera_details/?product=251&cHash=4d3858908f0a8971c86318d603d7a5dd