Sony FX 6 Quick Start Manual page 104

Cine EI: Project Status Page Settings
In Menu/User/Base Setting pick SDR (BT.709) for the Target Display and Cine EI as the shooting
mode.
You can also go to status page 4 and change the shooting mode to Cine EI. Always choose the
XAVC-I codec in Cine EI.
Cine EI
Always use XAVC-I