a late follow up of my "fog" problem... I finally managed to create the wavering fog I needed. It's not done by adjusting the fog settings in the atmosphere editor, neither by using fuzzy material or a cloud plane. It's simply a serie of volumetric spotlights. Fast and easy !

For those interested the settings are :

Spread : 10
Falloff : 60 %
Power : 70
the spots lights are all parallel to the ground.

to reduce the sharpness select the volumetric light option :
"show dust and smoke in light beam".

To create the effect many of them are necessary. And it works
only with "dark" light exposure and nearly no ambient light.

So this is the result (before / after ). And thanks to Varian
for his wonderful dead tree (the plants and trees available
on your website are amazing !).

Eric

Hey Eric, that looks great. Sharen

Excellent job, Eric! I'm glad you were able to find such a simple solution -- and the effect is terrific! :D

The low fog looks really good, and it doesn't smoke the upper atmosphere. Charles

Should add this to the FAQ pages.... Ya the fog looks good.

Very clever solution... a bit CPU-intensive, but still about the best fog I think I've seen so far. Thanks for the tip, and I'm gonna have to try this. :)

For those interested here's a screen capture of the lightning set-up. Strangely, it's not very CPU-intensive : The rendering time is only 20 % longer. Using volumetric spheres (the other solution) results in much longer rendering time (80 % more).

Eric