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Arri ALEXA 3.0 Software Update

Exciting news here at RBC is that Arri, keeping with their promise of delivering updates for ALEXA, have recently released version 3.0 which now allows video playback of the clips from the SxS media cards, audio recording via the 5 pin XLR stereo input and embedded in the HD-SDI outputs, and max 3200 ASA. Push the PLAY soft button on the camera side, and scroll through the clips to select one. Push the knob and your viewing your footage on all outputs. A future update will allow audio to play back as well, but for now this is another step in the right direction from Arri. With ALEXA’s multiple output and record options, 3.0 has made it easier to independently select each output/record path gamma setting. For example; record LogC to SxS cards while outputting Rec709 from HD-SDI outputs. All easily accessible from the lcd without going into the menu hierarchy. The Rec709 color processing has also been improved from last version. If you do choose to record LogC to SxS , Arri has made available a LUT generator (Look Up Table) on their website for downloading LUT’s and applying them to footage in post. The viewfinder has an optional Smooth mode which reduces flicker in the viewfinder at 30fps and under. A much more pleasant viewing experience but this will not be the same as all other outputs which will still have motion flicker in respect to frame rates. False Color Check can be activated in the viewfinder and/or the monitor output path. False Color Check is an exposure level guide using different colors to relay different exposure levels in your picture. This is helpful as it’s the only exposure guide in the camera. Where traditional video and HD cameras have Zebra settings or spot meters, ALEXA is based on setting an ASA and measuring for that sensitivity. A more traditional film method.

False Color Map (From ALEXA manual 3.0)
Metadata can be set via the lcd which includes production info like director, cinematographer, location, and user info that could include scene names,etc. The data is saved with the ProRes files making it available post. Single Frame Grab is a nice function that will store the current frame in the Rec Out path to the cameras SD card as 1920×1080 Jpeg, Tiff, or Dpx files. Thanks to Arri for keeping the updates coming and ALEXA evolving. The camera will continue to produce exceptional images with amazing latitude into the future. Dave Kudrowitz Senior Engineer