A LITTLE FOOLING AROUND WITH MIN/MAX RADIUS

This scene consists of these elements:
-180 degree nurbs-sphere, with incandesence material set to about 50%. This shere is located just outside my scene. It acts as a light source, but dont ask me why I need a light in the scene to make it light my scene with its incandesence vaule.
-Scene objects, most objects are colored white, while some has the heavy metal shader on it.
-A directional light, whos intensity is set to "0"

-FinalGathering Quality is set to "PreviewFinalGather".
-FG rays = 200

The size of this scene is 10 for the centered scene, and about 20-30 for the floor.

In this first rendering I set some very high values here for fun.
-MinRad = 1
-MaxRad = 10

RESULT:
Well, the rendering is spotty, but still quite nice for a preview (I think). Wow, the diffuse here is awsome. I have read somewhere that you can map the sphere with an image to give it some varying light shining onto the scene. Maybe a hdri image would be cool here , for both incandesence map and reflecion map.

I will do a great rendering at the end of all this to hopefully sum up my experience today.