denoise doesnt affect an object

[Christa Noel]

hi guys, please help me
As the title said, denoise is clearly able to affect other objects but not with my wall. is there a settings which makes an object/material denoise-proof ?
screen recording

[maru]

After how many passes is this?
Does your wall have a bump map?
Is there some invisible geometry between the wall and the camera? (like a portal, invisible light, some hidden geometry?)

[Christa Noel]

After how many passes is this?. i'm not remember exactly, around 240-270 passes, with noise around 4.3 - 4.6%. i know the render needs more time to cook but its not too early either.
Does your wall have a bump map?. yes.
Is there some invisible geometry between the wall and the camera? (like a portal, invisible light, some hidden geometry?). there are hidden geometries but not in front of the active camera / between wall and active camera

[maru]

And which version of Corona is this?
Could you share this scene with us, or a part of it?
I think it may be because of the new way how denoising handles objects with bump maps.

[Christa Noel]

hey thanks maru,
actually in this job i experienced 2 other bug like issues but i'll tried to reproduce it after the job finished, and simplified the scene as simple as possible and then send it.

[Christa Noel]

And which version of Corona is this?

corona 2 build 7 april 2018
3ds Max 2016 SP4
Win 7 SP1