You're getting a lot of grey because the backdrop has a lot of grey. If refractive surfaces don't appear as transparent as they should then you need to check a few thingsOriginally posted by rasta3d
> Why am I am getting so much grays, and not enough strong darks and lights?
You're shadows are probably noisy because the samples on your light (s) are too low.Originally posted by rasta3d
> Why isn't my gradients nice and smooth? If you look closely, there seems to be something like dithering going on.