Hello, I was browsing sidefx's vimeo page and I noticed in one of the intern's work there's this effect: http://vimeo.com/72062307 [vimeo.com] 3:05 mark. It a fireball falling diagonally. It featured multiple containers covering from trail to head in a “stair-case” position. I was wondering is this done. What's the setup looks like? Thank you!
I attached a screenshot.