I was thinking about reflection and transparency effects the other day
and it occurred to me that many real objects aren't perfectly
transparent or reflective.. consider a moderately-polished wooden table,
or a lollipop. Yet, I know of no way to simulate this effect in POV-Ray.

My proposal is simple enough: the addition of a "blur" keyword, which
could be used inside of a finish (blurry reflection) or an interior
(blurry substance). I imagine that the easiest way to do this would be
with a variation on the focal blur or antialiasing code.

Of course, generating blur would increase render times, but.. well,
that's the price you pay...

-Xplo

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