sRGB is not the only color space - there is also Adobe RGB

And what does Adobe RGB have to say about the meaning of its levels?

Quote - As with sRGB, the RGB component values in Adobe RGB are not proportional to the luminances. Rather, a gamma of 2.2 is assumed, without the linear segment near zero that is present in sRGB. The precise gamma value is 563 / 256, or 2.19921875.

Now if you know anything about color spaces, you know it's a mistake to look at an Adobe RGB image without color management (conversion) on an sRGB device. It will look wrong.

So do Poser renders that don't do color management.

There is more than one set of color management possible, and we could ask SM to deal with incoming material in Adobe RGB and to emit results in Adobe RGB. They have not done this, but they could. And it would be different than GC 2.2 as well.

In fact, sRGB is different than GC 2.2. We see this on really really dark things - less than 1% luminance are incorreclty recorded by Poser GC 2.2. So maybe you want to drop it to 2.0 or 1.9 or 1.8 in order to de-boost the super darks.

But overall, GC 1.8 to 2.2 is a big huge more accurate result than not doing GC or doing GC = 1 (which is the same thing, and not a "correction" at all.)

Remember Gamma Correction (not arbitrary gamma) means to match the luminance of the target color space. Not matching it is the same as "incorrect".

Poser's GC is actually closer to Adobe than sRGB, if I read that info correctly.

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