I would think at least some of the parts will or are being printed now. At some point I see light being bent by magnets in the lens in addition to or as a replacement for glass.
Very nice set, very well executed photos. Ya done the robins a nice favor. I suppose ya messed with natural selection but to heck with it, it's your yard!
All the shots are sharp and clear, and I never get tired of hummingbird shots. I wish I coulg get something half as good as this. I've enjoyed about a million hummingbird shots but never seen another set with this progression of poses. Keep em coming!
Your great personal bias is well understood here, and that photo will be loved for a great many years to come. You did a very nice job, but degree of difficulty is somewhat low due to the beauty of your Granddaughter.