More than enough headroom built into it, don’t need to underexpose.
SONY says slog 2 and 3 bright white should be at 60%
gray slog 2 should be 32, slog3 gray is 41
DJ reccomends 75% for bright white for both.
Base ISO at 2500; he rates it at 1000iso.
exposure node before lut applied.
DJ like slog2 better. The other slog3 cine.