What's the difference between an object emitting light using an emission media
and a light which Looks_Like an object?

Is one more flexible than the other?

clipka <ano### [at] anonymousorg> wrote:
> Am 30.08.2012 13:28, schrieb mathieu_r:
> > -> "Spheres probably give the best result; actually, the result will be quite
> > similar to that of an equally large area light with the "circular" and "orient"
> > keywords."
> >
> > I imagine that if I put a sphere object just above my landscape, I'll have to
> > make it disappear with hollow keyword?
>
> You only need hollow for objects containing media.
>
> If you want to make an object emit light but otherwise be invisible in
> the image, use "no_image no_shadow no_reflection", meaning that it will
> not be directly visible in the image, nor will it have a shadow, nor
> will it be visible in mirrors or the like.

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