Unknown reflection artifacts

[taras_991]

Hello to everybody!

When rendering multiple bedrooms in Corona faced a problem - the light from the windows reflects in unnatural way on the opposite wall, I suspect that the problem is in tulle / curtains, but can`t understand what is it, I tried to put different materials,the result was the same. Can someone advise how to get rid of this problem? Thank you in advance!

[mferster]

have you tried rendering without the curtains there at all? Can you post your curtain material?

[maru]

Do you mean the vertical "shadows" on the wall? That's really interesting. Any chance that you could share the scene? You can host it somewhere (Dropbox, WeTransfer,...) and send us the link over at https://coronarenderer.freshdesk.com/support/tickets/new
I wonder if it's not some physically correct phenomenon...

[arqrenderz]

Anisotropy on that material??