on BB's posts

 - labelling GC as an image engineering thing: correct

 - having nothing to do with render shortcomings: discussed that. In Poser the function and values are just (ab)used for that. Poser does not have to compensate for my monitor, my graphics system does. So Poser doesn't (besides using OpenGL for preview, which sort of takes care of it).

 - my monitor etc affect my brightness judgement: correct. That's why I'm not using it for that purpose. I color by numbers using Photoshop, render in Poser, export the result and re-read the results in Photoshop again. I only need my monitor to position the mouse, but any monochrome device, audio or even my blind cousin could have done the same for me, it's just cumbersome.

When I input 100%, set the filter to take 20% away and measure 80% in the result, it's working as it should.  When I measure 90.45% the filter has been affected (by GC with gamma 2.2). Then Poser alters my filtering, and it should not. In some cases, I can adjust the filter strength, in some cases I won't (transparency) or I can't (fresnel).

For precision, I can use HDR format.

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though