The scene requires POV-Ray 3.5, I don't know if it will work with
MegaPov, and it won't work with POV-Ray 3.1, since it requires the
trace() function. Also, it calls for "math.mcr" and this might need to
be changed to "math.inc" in your implementaion, like Bill had to do. Let
me know what the errors are and I will try to help.
I didn't post an image using this technique, and I didn't even post an
example image from this file.

Josh English
eng### [at] spiritonecom
http://www.spiritone.com/~english


Jong wrote:
> 
> Dear Josh,
> 
>  I've been fascinated by your idea of having two IOR values in the lens.
> I've also been trying to catch your implemetation of this scene files in the
> binaries.images. Well, I could not find it so far. I'll appreciate it if you
> could possibly where I could find the image.
> One more favor to ask of you:
>  I seem to have minor errors when I run your scene file IOR.POV.
> Is there  any clues to this?
> 
> Thank you again,
> 
> Jong

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