Hi

I'm trying to render pictures with black windows. So in general black glass. I tried first with a simple wall in black color and shiny surface. That doesn't look bad but is not as smooth as I expected. Then I tried with a window in black color. However now it is transparent and I can see the things behind it which is not what I wanted.

How can I best create a surface with shiny but (almost) non transparent glass like these examples?

https://m.media-amazon.com/images/I/51W ... 0,500_.jpg
https://static1.squarespace.com/static/ ... D+2015.jpg

Thanks