Nikon 13-30X/20-45X/25-56X MC Zoom Eyepiece
summary Questions (0) All lenses are multilayer coated for maximum brightness of view field. "MC"stands for Multilayer Coating. Turn-slide rubber eyecup is applied to the wide type eyepiece for comfortable viewing. It helps you position your eyes at the correct eyepoint. Optics employ Eco-glass containing no arsenic or lead.