Does anybody know if the Bryce intensity light measure unit is the same with a simple photometer?
If not, is there any conversion table or something?

I'm making a new picture and i need to simulate an interior as much as i can with the real life.

Thx in advance

Kostas

Unfortunately it doesn't, You just have to play with it untill you get the look you like.

One thing to keep in mind is Squared Fall-off. real lights only have a linear falloff in a totally controlled environment. The only problem is that it takes MANY lights to re-create a scene, and thus drives your render times straight up. A light bulb doesn't emit light from a central point, but from millions of points along it's filament. Bryce cannot do this internally, you have to fake it with either multiple lights or a light array, well they are the same thing really! There are other lighting methods, like True Ambience, that can greatly add to realism. For more info on this method, simply do a "Search" in the forum section, and enter "Ornlu", he's the techy-guy. (Well, one of them for certain!)