Quote - Here was the first render, with what I thought were very aggressive render settings. I used the D3D Render Firefly dialog where I can control things directly. I had IDL bounces=6, samples at 6000, Irradiance Cache set to 90.

The env sphere HDR value was set to 16. (I'm not in a fish bowl - with the relatively small angular cross section of these windows, I needed four stops.)

After two hours I got the usual ridiculous light leaks and splotchies. But, at least the lighting looks about right.

 

Hi BB

 

I've question where are you adjusting/setting HDR Value ?

 

You are adjusting Ambient value or on the HSV ?

 

 

Thanks,Jura