It took 1,5 h on Athlon 1,7 with photons spacing 0.05, probalby because 
computer run out of it's 256 RAM (some memory was used by other process) 
and it was swapping all the time do disc. 30 min took shooting photons.

I will try to render it again on ~1 Ghz with 1024 RAM, with spacing 0.02 
and this time - with radiosity

How we can see some photons artefacts are in middle-botom of image. Maybe 
just adding jitter instead of increasing spacing will help ?
If yes - maybe this image could be a nice example to manual about photons 
:) 

All comments are welcomed

-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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