How about rendering the light cone directly on black, then using either the Add or possibly Overlay might do a better job as the blending mode for light cone layer.
It can easily end up being too strong, but if you set the opacity down at the same time as using add, you might get a pretty good effect,
harder to say how to do a very good Gel on whatever objects it is too hit,
but if there's no indirect light, nor any ambient light, then anything the light doesn't hit should turn out completely black. EDIT: Oh yeah, Kixum, by Units do you mean Inches, cms, or what exactly?

Message edited on: 04/20/2005 21:11