Look File Alf4; Setting The Look - ARRI ALEXA 35 User Manual

Look Settings
LogC4
Look
The applied processing (LogC4 or Look) is indicated by the processing icon in the status infor-
mation of the respective output.
User Buttons VF Check LogC4, SDI 1 Check LogC4 and SDI 2 Check LogC4 support to tem-
porarily set the respective output processing to LogC4.
SDI Color Space
► Select MENU > Image > Look > SDI 1 Color Space
► Select MENU > Image > Look > SDI 2 Color Space
Following options are available:
REC 709 (SDR)
REC 2020 (SDR)
10.2

Look File ALF4

The ALEXA 35 uses a new look file (ALF4) which can be created with the ARRI Reference Tool. While
the previous ALF-2 look file contained both the creative intent and the conversion to a display color
space, the new ALF4 look file is a Log-to-Log file that only contains the creative intent.
The conversion to the display color space will be done in a second step in-camera. The advantage on
set is that it is now possible to view SDR and HDR images of the same look. The advantage in grading
is that the colorist can easily combine the on-set look with their own, favorite conversion to a release
color space.
10.3

Setting the Look

► Select MENU > Image > Look > Look.
► Select a look from the list or
ARRI Look Library
The ALEXA 35 includes the new LogC4 version of the ARRI Look Library. The Look Library provides
a set of 87 predefined looks with a basic repertoire of color responses, similar to film stocks and filters
used with analog cameras. For further information about the ARRI Look Library, please visit the
Look Library Microsite
► Select MENU > Image > Look > Look > Add > Look Lib.
► Select a look from the list and press IMPORT to add the look to the installed looks list.
► Import further looks from the Look Library or press CANCEL to exit.
Images are output in LogC4 on the respective SDI output.
The active look is applied to the respective SDI output.
REC 2100 / PQ (HDR)
REC 2100 / HLG (HDR)
a look from an inserted USB medium or the defaults list.
add
or the ARRI Look Library FAQs.
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