How can I exclude a Matte object from VrayAerialPerspective?

V-Ray V-Ray for 3ds Max General
1

I will explain what I mean.
Lets say i have an object that I want to make it Matte to mask other objects.
The problem is that, because I am using VrayAerialPerspective, the alpha of the Matte object is not fully black. As it gets the fog from the AerialPerspective so its tinted a bit.
Thus when I use it, it will tint the final image as well.
How can I solve this?

2

Currently, you cannot exclude the VRayAerialPerspective from the alpha. So, the solution is to render twice, with and without the atmospheric effect (with the VRayAtmosphere pass) and compose it in post.

3

I thought of that too, but I believed that would be another option something I didn’t see (as usual).
Thank you for the advice though :smile: