I'm working on an industrial fine arts project and need some new equipment, but what? Quality is paramount as the final product will be prints on 20x30 aluminum sheets. The subject matter is also aluminum, left over cut out sheets of aluminum from a machine shop. Imagine the possibilities... I don't have a macro lens, but do have the Panasonic 35-100 f/2.8. The attached image is shot at 100mm at the closest focus setting. I don't have access to a store that carries the Kenko extension tubes but they sound promising. Anyone have some experience with the 35-100 2.8 they can share? How much closer can you focus? Can you get 1:2 life-size? Would a macro lens be better? Or perhaps I'm overlooking something? This should be a very cool project with amazing images in the end. Thanks for your input!