OK ... after ca. 3,5 weeks the image is done
I don't think it was worth the time as it was only an testrender

its a (quite simple) isosurface (with a std texture, nothing fancy)
and a scattering media container and some lights inside the media ...
Only I had to set maxgradient to 120, so it was quite slow...

so tell me now, why I left it render so long ...

I think I won't test any longer on this source, as I planned to add
some (variable) reflection to the iso and modify the function in a
way, that the "hardcuts" go away ...

Also you will notice, that the image has no AA ...
I can't believe that the img would have taken even longer with AA on ..

now, here it is ...

Post your comments, but don't count that I'll do modifications to it
...

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