VrayRawReflection render element overexposed

[emy-design]

Hello,

In VrayNext when I render with both VrayRawReflection and VrayReflection render elements available + Denoiser , the VrayRawReflection pass is overexposed.
If I render only a VrayRawReflection pass + Denoiser the renderpass is ok.
If I render both VrayRawReflection and VrayReflection without denoiser the renderpass is ok.
It’s not related to a specific scene.

I guess I have missed something but…Any idea ?

Thx

[^Lele^]

why would you render both, may i ask?

[emy-design]

Well, mainly for postproduction in photoshop...

But maybe you mean that I can also combine the RawReflection with the Reflectionfilter to get the Reflection...

[^Lele^]

yes, of course.
But why not just render reflection plus reflectionfilter?
What's the need for the raw (for which you'll need a reflectionfilter anyway)?

[emy-design]

It’s only to tweak reflections in post in a more "accented" way…

[^Lele^]

Apologies, i wasn't very clear.
I meant that the two elements are identical, one is already multiplied by the reflectionFilter, while the other, as the name implies, is the reflection without the filter (call it the intensity and color, per shader, of the reflection).
Because the reflection filter is lower than 1.0, and the operation is a multiplication, the raw element will always be equal to or higher in intensity than the reflection.
But you can go from one to the other via a division (or multiplication) hence my initial question about rendering the two.
rawReflection = reflection /reflectionfilter
reflection = rawReflection * reflectionfilter

my suggestion would then be that of rendering the plain reflection, and the reflectionFilter, and sidestep the issue with any automation in the denoiser.
It may still be a bug, but at least you'll get the job done.

[emy-design]

Thank you for your answer, you made it very clear for me.
I had the bad habit to render both passes without considering to generate them with filter pass, so I focused more on the Bug than on the way to go around it.

Thanks again for your time