I really like the mood.
So i made some Research with my current arsenal of Renderer (truly an ongoing process 😉 ).
First i wanted to see Luxrender in Action. This is a screenshot 1 Minute after start
Its CPU Bidirectional.
I imported the Scene to Thea Studio and got this after 1 minute rendering
Its CPU rendered with TR2
Interesting – it doesnt have the nice blueish absorption. But thats my fault 😉
I doubled the Resolution and give it 90 Minutes to cook.
Thea 90 Minutes.
Now i tried to see what Vray (for Blender) can do here. Without the EnvorinmentFog ist fast and you get it noisefree in under an hour (screenshot follows).
With Environment Fog i dont get it to render in reasonable time noisefree. This is about 40 min.
Vray 40 minutes.
Currently i inspect the fact that enabling Environment fog is doing some crazy sample Multiplication i cant think of.
I find this scene tricky because of the combination of Caustics/Radiosity/Volumetrics.
But i ll get news to it soon 😉