Quote - > Quote - 4. Poser 8 includes Tone Mapping with an option for HSV Exponential. This is an approximation to 'proper' input and output gamma correction.

Poser 8's Tone Mapping only approximates output GC. It does not touch input. This is not actually the right way to deal with GC, but it is a simple, sloppy approximation. Besides, SM documents Tone Mapping as a mechanism to compress the highlights, not expand the shadows. BB noted that the actual formula used seems to be about the same as used for GC, but HSV Exponential is better at preserving the saturation of colors in the highlights.

But you already knew all that.

Whichway
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Tone mapping was invented for the purpose of compressing high-dynamic range content (HDRI) into limited color space.

Being mindful of how the the sRGB color space actually works, it has some element of exponential built in - can't be avoided.

The published math formula looks very different from the simple GC formula, but when I transform it, it's pretty much the same thing.

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