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You're basically dealing with large volume, as such making more sampling
necessary to cover it. You could try leaving out 'scattering', which is
the main reason for "speckles" I believe, and use emission and/or
absorption alone.
Try using a larger "environment" sphere or box to surround the entire
scene as well (hollow of course), not a 'sky_sphere' or 'background' by
itself either.
Others may have better advice, so stay tuned just in case.
Maneesh Yadav wrote:
>
> Hi all...I thought I knew how to use media...it worked just the way I
> expect on small objects...then in one of my pics I noticed I was getting
> wierd colors for really large (r=2000) spheres....
>
> I have a scene (on the order of ~2000 units^3)...and when I use a media
> statment outisde any object for an atmosphere I get white speckly
> silouhettes of objects tried messing with params (even cut pasted from a
> media tutorial) and nothing changed....I don't think my scene is to
> bright either...anyone have any hints as to whats going on ?
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