Arnold's metalness not behaving as expected?


#1

Hello,

Im quite new to Arnold and Maya as well… i’ve modeled a ceramic dish and created an HDR panorama.
The dish has a rounded gold metallic ring around its outer side which i am trying to replicate using the metalness parameter plus a texture that works as an alpha. The aim is that only this thin outer ring will appear to look like gold.

The problem is the following: The metalness alpha that i used as an input (with correct UV’s of course) works as expected on the viewport but when i hit the render button the whole dish looks metallic. It seems like the metalness alpha texture is not being applied…

Any ideas on what i might be doing wrong?

Thank you so much,

Best,
Manuel.


#2

Make sure “Alpha is luminance” is selected on color balance section of the texture.