A lengthy explanation, as usual, this GI/IL Test Bed is a tutorial regarding setting up a scene for exploring the idea of ‘Painting with Shadows’ simply to gain positive experience that is sure to make lighting design more fluid and natural. You’ll be able to quickly and accurately test the results of a full lighting arrangement using only one light, while Carrara’s Global Illumination system takes care of the rest.
The idea of this is to gain experience in light angles and their resulting shadows, so that you build in your own mind a set of results that you like, and that work well for various situations, as well as to have fun with Carrara’s powerful raytrace engine.