I wonder if it could not be a setting saved in Poser's default scene: I've found in my preferredState.pz3, stored in Poser's roaming profile part. I don't know how to call this part, it's in each windows user profile: "%appdata%/poser/12"

The pz3 contains this near its end: postFX { useDenoise 1 exposure 1.000000 saturation 1.000000 }

𝒫𝒽𝓎𝓁

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