caustic problem

[fario]

Hello

I always have a problem with rendering and caustic.

There is always artifacts.

Do you know why?

thank you

[DriesV]

I think this is my cup of tea...
Can you share your scene, Antoine?

My first guess is insufficient caustic samples.

Dries

[fario]

Hello,

Thank for your reply.

I always have this problem with watches case and glass.

Here my settings with a example with 10 samples.

Sorry, but no possible to share this work.

Antoine

[guest84672]

Tun off "cache d'illumination globale".

[DriesV]

Also remember that caustics quality ('Lumière résiduelle') can be set much higher than 10 by manually dialling in a number. I've tested with values up to 500. Try a value of 100 and see if your image gets better.

Dries

[fario]

ok thank you all )

Antoine

[Will Gibbons]

As well as increasing samples on materials individually as well as in the settings panel.