heyas; bongo: yes, there is a fuzz control. it doesnt work on terrains. try it! put a fuzzy shader on a terrain and render. if your terrain doesnt turn completely invisible, let me know, because that means mine is screwy. :/ actually, i tried fuzzy terrains in bryce 2... and this clouds & air mix looked better anyway. them's the breaks. ;) i just added puff clouds to that 'ray of sun' pic, with the big cliff.... killer. :) will work on the tutorial this week.