Sony FX 6 Quick Start Manual page 141

Cine EI: Slog 3 exposure without a LUT
In this image the white card is exposed at 61 percent. The waveform monitor is
reading the signal from the Slog 3 image, not the applied LUT, because there is no
LUT applied to the SDI/HDMI outputs. Note that the Base Sensitivity (ISO) and EI
preset match: 12800.
What is being recorded: Slog 3
No LUT applied to the viewfinder
Signal measured by waveform
61 % line for white card