The Sony A7sii has dozens of options when it comes to color. Awhile back, I read an article by Marien Brethouwer about SLOG3 and banding in white areas.
He suggested something called PP8 -> CINE4 and switching the color mode to S-Gamut3.Cine.
You’ll find the dynamic range is very similar to SLOG3. You’ll still need a conversion lut for this setting to bring your color back to Rec.709.
Here are some examples. Keep in mind that white balance has not been adjusted.
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