transparent material problem in rendering

[ozzidora]

in the first image strange black areas in glass volume on the right,
in the second image video cap of the settimgs in google v8.
Why do those black areas appear?

[Fletch]

Because of the thickness of the glass, and the index of refraction used.

Simple fix:
Use Templates>Architectural Glass>No Shadow. Set Alpha of glass to ZERO.
Render.

[ozzidora]

thank you