Ah I see.
Yes I have that setting too.
It is simply just "noise" across your image that looks a bit like falling snow.
I can't think of any way to add snow to your model other than actually modelling it (that would be quite difficult and tedious) or creating materials that will give a snow effect (i.e. a snowy JPG image added to a material) - but that wouldn't look very good either.
You best bet would probably be to Photshop the snow into the render after it is done maybe.
As I have never even seen snow where I live there is not much call for me to experiment in that direction.
So I will leave it up to others here to better advise you.
Barry.
One of the forum moderators.
Versions 6.5 to 27
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