Hello, I have weird fireflies and artefacts when I use the Radial distortion type "cubic_inverse" in the Arnold tag of the camera. No problem with the "cubic" type.
Here is my setup:
output image 1625x795 pixels
Camera: focal length 12 mm, 36 mm sensor
Arnold tag: Radial distortion 0.13, Radia distortion type "cubic_inverse", Lens tilt angle 9degrees on the Y.
I'm looking for the widest image with the lowest amount of distortion possible. When I use this setup, a long purple sort of light leak appear in the render. Is there a workaround or a trick on the settings?
cubic_inverse type:
cubic type:
I was not able to reproduce it. Can you send me a simplified scene maybe?
Sure, here is the file with only one material, physical sky and two camera with the described settings. (because it said "Denied" on the file uploader, I've made you a wetransfer link here: https://we.tl/t-4O7ZlV6Gx6 )
The issue is a combination of the cubic_inverse radial distortion and flat projection on the normal map. A possible workaround until the fix is to generate the uvw from the texture tag (Right click -> Generate UVW Coordinates) and use that uv map for shading.