Reflection Glossiness is darker in RT (images attached)

[Delineate]

I noticed today, as I was lighting my scene with a dome light & HDR Light Studio, that the result / brightness differed between the VRAY-RT result and Production render. And I've narrowed it to the reflection glossiness.

As soon as you lower the "Refl. glossiness" value from 1.0 to anything else, the RT image deviates from the production render.. In the images attached it doesn't appear that bad, but when doing commercial work, the difference was big enough that I've spent the whole day trying to solve the issue. Now I wonder if it's a bug, and if this is a known phenomenon.
Is there a fix for this?



Production is on the left, VRAY RT is on the right in the attached images.

Thanks

Vray 2.40.03

[Delineate]

I added another image, which highlights the problem when using brighter lights & lower Refl.glossiness. Notice how production render image is completely blown out, where as in VRAY-RT the highlights are still ok.

[Delineate]

Phong seems to work better, Blinn and Ward don't. How come?

[vlado]

Have you tried the "Fix dark edges" option in the V-Ray material?

Best regards,
Vlado

[Delineate]

The results between production and RT are still different... even with fix dark gloss edges enabled

[vlado]

Then I will need some way to reproduce this. Do you have a scene that you can send to vray@chaosgroup.com?

Best regards,
Vlado