Sony FX 6 Quick Start Manual page 122

Cine EI: colour grading with the s709 LUT
In Cine EI mode, when you have the s709 LUT applied in the viewfinder (and
SDI/HDMI outputs), the file will nevertheless be recorded to the camera as a low
contrast Slog 3 file.
The LUT is not "baked in". It is only used for monitoring. You must correct the image
in postproduction by reapplying the s709 LUT, another LUT, or correcting the image
from scratch.
The s709 LUT is available from Sony on this page:
https://pro.sony/en_CA/technology/professional-video-lut-look-up-table
The s709 LUT is not completely neutral. It has a certain look. Shooting with the S-
Cinetone look in Custom mode will make images similar to Cine EI mode with the
s709 LUT.I don't recommend it, but you can shoot in both modes in the same
project . Some colour correction is required to match the files and it can be difficult.