what is the best way to achieve this lighting?

[_mats_]

HI Guys -

More questions, as usual...

I am trying to simulate this recessed back lighting, I have created a molding element and placed a 300% luminosity tube inside, I cannot get the light to spread out far an nice though, any ideas?

I played with some settings but it does not seem to work?

[phile_forum]

Well, a luminosity of 300% is fairly low. You could try turning it up to 1000% or so. Also, it may not be necessary to use a tube - just paint the wall polys up there at the back of the recess in the luminous colour.

The illumination will be grainy, so turn up Rays Min & Rays Max (next to Luminosity threshold on the Quality tab) until it smooths out a bit. Quasi-random AA will also help.

Phil

EDIT: Example render & Kray settings attached. It doesn't render quickly, and there are still some nasty blotches to sort out. Four 1000% luminous polys up in the recesses.

I guess if you didn't want to go to the trouble of actually using the illumination, you could fake the light creep across the ceiling using a weight map to control luminosity (set at 100% or so)...

[Captain Obvious]

In order to get it to spread out nicely, you will probably have to play with your tone mapping settings. It's downright impossible to get a nice spread when rendering to linear. Try HSV Gamma 2.2 or something.

Also, the lights underneath the edge should be calculated as indirect, to save time. Or even baked.

[_mats_]

wow you guys are great !

thanks

Playing with the settings, I have a combination of bad surfacing and bad settings it seems, I will work this more and post an update

tnx again !

Matt -