Here, we have collected ARRI’s white papers on the ALEXA camera line. This page will be updated as new white papers are released.
ALEXA XR Module Workflows - July 3, 2013
Most of the big Hollywood features that were shot in ARRIRAW were recorded on Codex recorders. The technology used by Codex, its reliability, smooth workflow and their reputation led us to engage in a close partnership, to create a more powerful integrated recording module for the ALEXA. The fruit of this collaboration is the ALEXA XR Module which, for the first time, allows uncompressed in-camera ARRIRAW recording. This not only makes for a smaller and lighter ARRIRAW camera package, it also simplifies setup and operation and enables a faster, more reliable and more versatile workflow on set.
This document provides an introduction to the workflows related to the ALEXA XR Module.
ALEXA Metadata White Paper – May 16, 2013
The ARRI ALEXA provides metadata with its images. This additional information makes documentation easier as the metadata is stored within the image files so it cannot get lost.
This document reflects the support of metadata for all ALEXA cameras running SUP 8.0 or later.
ALEXA Studio Electronic & Mirror Shutter – January 19, 2012
This paper explains the basic functioning of a mirror shutter, the relationship between shutter angles and exposure time and the resulting visual similarities and differences. It then gives a blow by blow explanation of how an electronic and a mirror shutter expose each frame. At the end it provides some practical tips for using each shutter mode.
ALEXA Anamorphic De-squeeze White Paper – July 7, 2011
Starting with ALEXA Software Update Packet (SUP) 4.0, some new features can be added to ALEXA cameras through the purchase of a license. The first such feature is an anamorphic de-squeeze function. This paper describes the basics and history of the anamorphic process and how the de-squeeze function in ALEXA works. While the subject of the anamorphic process is fascinating and really deserves a longer treatise, this is meant as a simple primer to better understand the ALEXA de-squeeze function.
ARRI Look Files for ALEXA – July 5, 2001
Starting with ALEXA Software Update Packet (SUP) 4.0, ALEXA cameras can apply user-defined looks to customize the rendering of video images. The user can choose if the camera should apply an ARRI Look File only to the monitoring outputs (non-destructive mode) or if the look file shall be baked into the recorded image (destructive mode). Either way, the look file is embedded as metadata in the recorded QuickTime ProRes movie and in the ARRIRAW format.
This document addresses the use of ARRI Look Files with an ALEXA camera.
ALEXA Color Processing – March 1, 2011
This white paper gives an overview of the different output formats available from the ARRI ALEXA series of cameras from the point of view of the different color processing formats . Important terms are defined in the introduction, after which the different output formats are explained in detail . Differences between the color processing of Software Update Packet (SUP) 2 .x and SUP 3 .x are pointed out . This white paper is accompanied by a number of HTML files that allow an easy side- by-side comparison of different color processing formats.