ARRI ALEXA SUP 7.0, Pocket Manual, Page: 21 / 100

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ProRes
HD and 2K recording
With the release of SUP 7.0, all ALEXA cameras will
be capable of recording QuickTime/ProRes 2K files
onto SxS cards. The ALEXA and ALEXA Plus offer 2K
recording in 16:9 aspect ratio while the ALEXA Plus
4:3, ALEXA M and ALEXA Studio can also capture
increased vertical resolution with the 4:3 aspect
ratio.
Capturing with the 4:3 aspect ratio is essential for
cinemascope productions as it allows using regular
2:1 anamorphic lenses. Additionally, productions
shooting with standard spherical lenses can benefit
from the 4:3 “open gate” capture mode.
Productions aiming for a DCP delivery do not have
to upscale their footage to match the DCP container
(2048 x 1080 pixels), but can record native 2K
(2048 x 1152). The desired delivery format can be
achieved by cropping and/or downscaling.
For more information on using ProRes 2K in different
applications, get hold of our “ProRes 2K in Editorial“
white paper available at
www.arri.com/alexa/downloads.