Nice render! 
I haven't seen any parameters, to adjust a photons rate of decay, except for settings to control how many times a photon bounces. Used for ambient lighting.
Thinking about it further. In real life, the only thing that affects a light rays rate of decay (before hitting a surface) would be dust/smoke particles in the air or other scattering anomalies.
I haven't seen any method for Sunflow to produce volumetric effects. It's one of things I was hoping we would be able to add, to produce catherdral lights (visible rays of light passing through the air)
Another member.
I haven't seen any parameters, to adjust a photons rate of decay, except for settings to control how many times a photon bounces. Used for ambient lighting.
Thinking about it further. In real life, the only thing that affects a light rays rate of decay (before hitting a surface) would be dust/smoke particles in the air or other scattering anomalies.
I haven't seen any method for Sunflow to produce volumetric effects. It's one of things I was hoping we would be able to add, to produce catherdral lights (visible rays of light passing through the air)
Another member.
Ah, well it was worth asking, though like I said, you guys have done a great job so far.
Though you are going to make people's wishlist even longer by mentioning visible light rays! I know mine just got a little longer. Here is another attempt trying to cut down on the background light from what was used to light up the "moon"
I think I am getting too much bouncing light from outside the window?
EDIT:
I had to go back to a darker sky in order to cut down on the light that would bounce back into the room, in order to make the fireglow look more realistic. And once again this was shown to me by another member...
specifically db4tech... 
Why does a light sky cause alot of light to bounce around? Ambient light should be almost nil with the add sunlight button unticked?
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