A strange artefact on glossy surface

Support Materials and Textures
1

A strange artefact appears when camera is pointed perpendicular to glossy objects surface. Can anyone explain me how I avoid this?

Kind regards
Mikael


axtel_artefact

axtel_01.blend (627.6 KB)

2

It’s because you’ve set the IOR on your glass to 0.1.

I’m not aware of any real material with an IOR that low. For example, air is 1.0, water is 1.33, glass is ~1.5, diamond is ~2.4, etc.

3

Ah, of cource, thank you!
Kind regards
Mikael