To Gaussian Sorry but it is a fact, that cinema renderes much much much slower with some trees, when I use antialiasing. It has for sure something to do with that. This slowness is only if you have a lot of tiny alpha polygons (or planes). (Render options on 50 rays for alpha setting, because otherwise there will appear a lot of black planes inside the leaves.) Without antialiasing it runs much faster, but of course the result is terrible. The daylight picture by Carles Piles has no tree an no comparable complex alpha planes in it. The trees in the background there are one single background picture. I will do some more test renders with trees and post them in the Cinema forum in a new thread.