Help: Strange green artifacts on the render

Woland

Hello,

after rendering with Iray (MDL) engine I get some green artifacts on the black materials. I provided an example in the attachement. 
Anyone has any idea what it is and how to get rid of it?

Thanks for help in advance.

Woland

I'll add it happens only if the meterial is black. It is also visible in preview if I set to Iray. Tried to play with lighting settings, but nothing has helped yet.

Catherine3678ab

There are several surface settings to check through: glossy, metallic, reflective etc. both for the glove/hand and/or the surfaces throwing lights around.

cgidesign

Depending on material and settings "top coat" in surfaces can cause this.

Or maybe there is some "green" in your surrounding that gets reflected on the gloves?

Woland

Catherine3678ab said:

There are several surface settings to check through: glossy, metallic, reflective etc. both for the glove/hand and/or the surfaces throwing lights around.

 Decreasing "metallic" setting on the glove has helped. I don't understand it though, why maxing it (metallic setting) out causes this green noise?