Playing with an old file and tried rendering it using the Physical Sky in C4D. Added some post work in After Effects, mainly Red Giant Looks, Optical Flares and a touch of grain. Would love to render this out as a short animation clip, but unfortunately I am getting very long render times. This render was 90 minutes. Perhaps I’ll try baking the AO, and possibly the GI.
I have recently purchased VRAy for C4D so I will next try rendering it with the VRAY engine and see what kind of times I get.
I know this is just an experiment, but thanks for looking!