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I wonder if someone can help me out...

How can I reduce the reflectivity in Glass? I've been getting pretty good results with the wizard glass (not AGS) but I'm not sure what to change to reduce the reflection.

And on a semi related note, I've been toying around with using a "vacuum" layer on the bottom of something so I can make the actual layer I'm using semi transparent. (a) Is this a good idea? (b) what settings produce a vacuum?

Thanks for the help!

Rick

ps- here's an example of a rendering I just completed. I added transparency to the image I mapped onto the object across the street, but that shoots beige-orange light onto the subject which is a little sub optimal

you can always just reduce the Fresnel ior, its not entirely realistic but it is good enough for flat sheets of glass