In article <404c9b13$1@news.povray.org>,
 "Tim Nikias v2.0" <tim.nikias (@) nolights.de> wrote:

> > What am I missing?
> 
> Probably the photons. A raytracer just shoots a ray at a point in the scene,
> checks the lighting on that point by looking if the lightsources are blocked
> by other objects. Now, when there's a transparent object in the way, the
> light just gets dimmed.

Dispersion affects transmitted view rays as well as photons. The image 
of an object viewed through a refracting object with dispersion will 
exhibit the dispersion. In fact, this form of the dispersion feature 
predated the photon mapping version.

-- 
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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