the emission component by the density at the current point, which made the volume too bright in less dense areas. This made it look too rough, as opposed to smooth as it should be. This makes the particle rendering look *much* better, thanks a bunch to ZanQdo for complaining and kicking my butt to make me realise the error. Here's an example of how smooth it looks now: http://mke3.net/blender/devel/rendering/volumetrics/smoke_test03.mov http://mke3.net/blender/devel/rendering/volumetrics/smoke_test03.blend Settings in existing files will have to be tweaked a bit, since what they were set up for before, was incorrect. * Added two new interpolation types to Point Density: Constant and Root. These work similarly to in proportional edit for example, just gives a bit more choice over how hard-edged the particles should look.