So massive it could be a small hubcap. This iconic vintage Kodak Portrait 16'' (405mm) f/4.5 large format lens will cover up to 11x14''. It comes in its original box with mounting ring and screws. Its mounting flange is 5 1/4''. There are a couple of light scuffs on the exterior of the barrel. Its aperture adjustment is smooth and its glass is exceptional with no haze, fungus, or separation to its elements.