Noise in Render layer Black shadows

[ultranerd]

Hello Forum,
i know that there was several questions to the same topic, but none of them had a quality answer so i have to ask here again if it is possible to geht a noisefree Blacknoise Layer to use for Image composing in Photoshop.
I can share settings and also can post the file if it is neccessary, but is it in general possible to get this layer noise free or not?

Thank you
Christian

[aoktar]

If you can post some example scene we can try to repro and investigate that.

[ultranerd]

Hey aokter,
thank you for fast reply.
Here you can find the merged scene file: https://1drv.ms/u/s!AjZ-JW1LpuqSuWLu0lL ... r?e=RTvXov

cheers
Christian

[bepeg4d]

Hi Christian,
thanks for sharing the scene.
It is a “closed” architectural scene, with several Area Lights, so lighting conditions are complex.
In this case, it is only a matter of more sampling.
Here is what happens if you hide all walls, the Environment is reachable, the paths are killed correctly, and the shadow is cleaner even at lower sampling:

ciao Beppe