Lens refraction issue

[carsten_astheimer]

Page refreshed just when I uploaded, sorry didn't see your reply there!

[Micha]

I suppose so the color effects are caused by the dispersion. I used a quite high value since I hoped to see an effect. Maybe it's to much for your scene, you can disable dispersion also.

[carsten_astheimer]

I had my photon caustic multiplier quite high too (1000), to exaggerate any effect of the lens. This is it with dispersion off and the multiplier set back to 1

[Grigio18]

this is a scene where you can see that vfr is perfectly able to simulate light causticts dispersion, with a prism.

[Micha]

Wow, nice example, good to know.