In article <40a28795$1@news.povray.org>,
 "Tim Nikias v2.0" <#macro timnikias (@) #local = "gmx.net" #end> 
 wrote:

> > If the only light in your scene is the "sun" then maybe only the back of
> the
> > clouds are recieving light. You could try to add lights between the ground
> > and the clouds, to illuminate the visible parts of the clouds
> 
> Or use double_illuminate, so that both sides of a surface are lit.

Both of these will cause additional shading effects due to the angle of 
incidence of the light rays varying over the surface of the sphere. The 
correct solution is to use ambient 1 and diffuse 0 in the finish, as 

lighting.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: <chr### [at] tagpovrayorg>
http://tag.povray.org/

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