in a more or less controlled manner, I attempt to use Maxwell Render. The top image has the light outside the objects to the left and emitting to the right. The bottom image has the light inside the objects and emitting to the right. There are two visible objects. The contiguous shape is assigned a silver car paint material. The non-contiguous shape is thinner and assigned an aqua glass material. There is one invisible object, a square plane, that is assigned a purple emitting material. Good: It is fun, after rendering, to be able to adjust ISO, shutter speed, etc. with MultiLight, and generate several versions of the render. When doing so, it helps to feel the ambiance and GI of the scene, even as simple as it is. Less Good: Even after beefing up the render quality, there is still some noise. Thanks for your comments! Enjoy!