I performed some light testings how the light plays in the environment. The data is with an sphere object toward a soft light blue with a fogger emitter: Light refects the object at approx 50% to 80% depending on intensity of fogger, light blub, and the position of camera. The 50% of sphere that is direct reflect from blub is visible of its surface. Approx 20% of dark area is measured as the size of the light blub, in this dark area may increase blur contrast depending on the distance of the camera in back of the sphere and the distance between light blub and sphere.