On 03/30/2012 03:56 PM, ptsneves wrote:
> Hi
> I found on Google a scene exemplifying the use of one fresnel lens. I have tried
> to change the scene to put another fresnel lens in front of the converged light
> coming from the fresnel lens. The problem is that light does not pass across
> this second fresnel lens and just "stops" there with no effect. I would be
> grateful if somebody pointed me out why is this simple addition not working or
> at least point to the concept which i am misunderstanding.
>
> Below is the scene file.
> Thanks
> Paulo Neves

There's a thread in povray.beta-test ... "Photons not working as 
expected?" I saw the header "optics.pov" at the top of your scene file, 
and wonder if this might be the problem? Early after the last release a 
bug was found, reported and fixed! What version are you using? v3.7 RC4 
and RC5 have the problem.

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