Sony a6500 Help Manual page 430

or [S-Log3] gamma.
Setting [ITU709(800%)], [S-Log2] or [S-Log3] disables the [Black Level] setting.
If you set [Slope] to +5 in [Manual Set], [Knee] is set to [Off].
S-Gamut, S-Gamut3.Cine, and S-Gamut3 are color spaces exclusive to Sony. However, this camera's S-Gamut setting does not
support the whole S-Gamut color space; it is a setting to achieve a color reproduction equivalent to S-Gamut.
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