On an earlier post Y-Phil mentions BB's Fog Capsule. I couldn't find anything on this, but after looking at the PP12 Manual on Cycles Nodes came up with the following attempt at god-rays and atmosphere akin to what is possible with atmosphere under FireFly. This done using SuperFly and a large box at 1000% from the primitives and then cyclessurface settings and 1 spot light on a narrow end width no FX Not sure if it is the right approach, but will explore by making a small window blind model in Silo and trying it out in close up