In article <3a018f79@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   I think there's a third case where there's difference between an 
> inverted and non-inverted sky sphere: If it has (for some reason) ior.

You're right...POV uses the difference in ior to perform the 
calculations, so there will be a difference there. However, "hollow" 
won't make a difference in this case, it only affects fog and media.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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