Well, there's a new patch up at patch station for just this problem.  Its
called dswpov.  Check it out

Http://www.twysted.net/patchstation/

KillFile

"Basil S. Lewis, MD." wrote:

> noa### [at] writemecom
>
> I am now learning optics in school, and would like to point out the
> following optic errors in POV-Ray. I don't know how realistic pov is
> supposed to get, but I hope that one day these errors will be fixed.
>
> 1) When I use media/atmospheric light effects, I don't see the light
> curving when it goes through lens. It keeps going the way it did.
> Morever, if I point a beam into lens and watch where the beam falls on
> the other side, I see that the light kept going as if it wasn't
> affected. Only if I point the camera at the lens do I see the object
> behind the lens in the right way.
>
> 2) When I make a wall split to two by a small hole along its height, and
> point a light on to it, and then put a board behind, the light just
> projects a staight line (as we would expect) but does not show the wave
> property effects of light. This effect should produce dark areas across
> the board.
>
> I love POV, like all of us, and would love to see it beat nature ;)
>
>  - Noam Lewis
> noa### [at] writemecom

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