@theluthier Thank you very much 😀! I was thinking at some kind of cloudy hand that presents the chimney while hiding at the same time its open bottom part. Is there an explanation why the vignette only shows up clearly when seen through the camera? I’ve used adrian2301 ‘s world background node setup as orientation for my experiments. I’ve also learned that “Alpha Hashed” can approproximate “Alpha Blend” if you set the render samples high enough so that the gradients look less grainy.
