Saw profile when use dome light or background

[marko70]

wHEN I USE A DOME LIGHT OR BACKGROUND LIKE HDRI OR SKY TEXTURE IT' EVIDENT A SAW PROFILE, THAT DECREASE REDUCING THE EXPOSITION.

[marko70]

i'm wrong the problem is in every condition but is more evident whe the light is strong.No subdivision seems affect the problem.

[bdancer]

Under "Color mapping" use "Subpixel mapping" and/or "Clamp Output".

[marko70]

I thought it was enough to keep AA with high subdivisions, however nothing changes, clamp and sub pixel work, however, alter the colors. thi image was rendered with universal setting, therefore the clamp and subpixel was deactivated, as you can can see in the plane of the floor and in other parts you can see the undesidered profile,i tried to render the image on a 3dsmax of my friend and there is no problem.
If the only way is to select sub pix and clamp, is not possible work like sugggested from bb3 in this article:http://bertrand-benoit.com/blog/2015...ographic-look/

[marko70]

Ok after a great number of try, this is my conclusion: with a dome light without texture , subdivisions affect AA,so with min =1 and MAX =1 no AA and 1 min 4 max AA =on, if i put a texture in the dome light, subdivision don't affect AA