Re: Variations of black
make a new scene. create a plane. load in the default red plastic material thats in your material folder. change the RGB to almost pure black. assign it to the plane. GI will not affect this material no matter what the GI multiplier is set to. it is as though the material is like you stated "a black hole" it will absorb all the light and reflect none of it. Now, put the diffuse color to something in the gray's like 125 ish. re-render with the high multiplier and the scene will wash out.
make a new scene. create a plane. load in the default red plastic material thats in your material folder. change the RGB to almost pure black. assign it to the plane. GI will not affect this material no matter what the GI multiplier is set to. it is as though the material is like you stated "a black hole" it will absorb all the light and reflect none of it. Now, put the diffuse color to something in the gray's like 125 ish. re-render with the high multiplier and the scene will wash out.
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