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If you follow this link you'll see a Luxrender I did with a few glass objects. http://www.renderosity.com/mod/gallery/index.php?image_id=2099188

Maybe could be interesting to see how glas comes out with area-light. You just have to scale your pointlight in Poser to a high value (I used 1000). Because the light is round then, the shadows are very smooth and perfectly "real".

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