Codex has collaborated with ARRI to develop a new recording and workflow system for the ALEXA SXT (Super Xtended Technology). The SXT was announced in 2015, and gave the Alexa in-camera recording of ProRes 4K UHD (3840 x 2160 pixels) and ProRes 4K Cine (4096 x 2637 pixels). To record UHD and 4K the camera upscales material from its 3.4K ALEV III sensor. The SXT is a relatively new camera for Arri, and it is probably why we are unlikely to see a new Alexa announced this year.
To improve the ALEXA SXT, the camera will now feature a new revised Codex recording engine, similar to the system that is built into the ALEXA 65. This supports the latest SXR Capture Drives (up to 2TB), which offer staggering data transfer speeds of 20Gb/s. Customer’s existing XR Capture Drives will also work with ALEXA SXT cameras. The ALEXA SXT cameras also have a new media bay, developed by Codex, that features adaptors for XR and SXR Capture Drives, SxS cards and CFast 2.0 cards.