FRACTAL SUM?
Mmmm...I think another alternative would be 2d textures>clouds
clouds could give more realistic effects....if done as a trans map for a cloth plane/cube which is coloured as the fogs' base colour. Just giving a thought.....afterall the best fogs/clouds are
bryce.
Yes, the clouds node will work for this, as will the FBM node; but for me (and the thread's author...) Fractal Sum gives more pleasing results.
I also agree the
bryce clouds & fog are great; I'm one of those creatives that likes to see how much can I get out of one application. (Sidenote: I spent months in the late '90s teaching myself to draw/paint realistic clouds in
photoshop 3.0; although I could have simply used
bryce 2.)