well i have played around with the medium node in the enviroment settings, and have now some fog - thanks to
https://inlifethrill.com/fog-octane-render-cinema-4d/
but the light is still not 'alive'....... but dohhh while i write this, i just realized that i have been using the direct light kernel, changing this to PT, make it a lot more nicer
so - use PT kernel, not direct light.
thanks
jorgensen
you are welcome jorgensen.
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