Noise problem (HDRI Lighting, Interior scene)

[maru]

I can confirm that the proper method is sky object + Corona's standard texture tag with the map loaded as diffuse color. (without Corona sky tag)

[Benjanowitz]

Ok!
And what about the intensity? Is the Exposure? If I have 4 of intensity power in vray, should I put 4 in the exposure? Mmmh...

[maru]

You can either increase exposure in Corona render settings, or in the shader. This will have the same effect if there are no other light sources.

[Benjanowitz]

Ok, but what about if I use the photographic exposure? If i increase the exposure of the HDRI in the diffuse channel I get a burned out background that I can't correct through the color mapping!