Archived posting to the Leica Users Group, 1997/10/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> > > Is that a glass Aspheric element (like in 21/2,8, 24/2,8, 35/2, 35/1,4 ASPH > ) > or a plastic on glass Aspheric element like in some japanese zooms ?? > > Lucien The press release says: "One of them is also aspherically ground and polished according to an innovative technique which Leica Camera helped to develop". Is plastic ever ground and polished, or is it always moulded? The glass Aspheric elements on the 21mm ... 35mm Leica M lenses are moulded, not ground. Correct? How about the 50mm ASPH Noctilux?