In article <4038f7cc$1@news.povray.org>,
 Marc Roth <mar### [at] rothconsultcom> wrote:

> > Interesting. Hard to focus on...and the center seems to move a bit.
> i think this is because he used red and blue. the human eye has problems 
> focusing on both at the same time for some reasing i cannot quite remember.

Dispersion. Red and blue are at opposite ends of the spectrum, and are 
refracted by fairly different amounts, so you can only have one in sharp 
focus at a time. In this case, a lot of it seems to be my eyes trying to 
focus on something that really is blurred. It might just be me, my 
natural vision is pretty bad and I wear contacts.

-- 
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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