Look at it like this: I have distributed a set of hand poses for Vicky which were all made from scratch. If you believe that these are copyrightable, then I own the copyright. But one of these has every joint set to zero. Do I have copyright on that? Suppose that one pose puts a 10 degree bend on each figure joint - do I have copyright on that? Because someone else could easily derive the same thing without knowledge of my pose set. Similarly with lights. Suppose I release a light set with no lights in it. Do have copyright on total darkness? Suppose I have a light set with one spotlight in it. Do I now have rights over every lighting rig that has one light with these settings (which could easily be duplicated)? It all makes a nonsense. Yet a while back, a prominent member of the Poser community was banned from this site for distributing a light set that differed only marginally from one that was being sold commercially. His position was that a light set could not be subject to copyright, therefore he was not infringing copyright. I'm inclined to agree, because the other way lies madness.