Hi Poll. First of all update to Vue 4.06. Vue 4.05 is a little buggy, 06 works great:-). To get the "volumetric sunlight through the trees" effect, just place your sun behind the tree, but at a place where the sun can be seen a little. If you hide it completely behind the leaves, it will not work. You need to choose an "empty" space between the leaves and branches. But... UPDATE! Guitta