Archived posting to the Leica Users Group, 2001/01/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]That was my understanding, too - at least about the 90. I was told by Werner Schmalz that was part of the problem that resulted in the production of the 90 being repatriated to Solms - the final polishing of the large aspheric element was difficult, and was giving low yields at Midland. Paul - -----Original Message----- From: Dan Cardish [mailto:dcardish@sympatico.ca] Sent: Friday, January 19, 2001 9:57 AM To: leica-users@mejac.palo-alto.ca.us Subject: RE: [Leica] Re-computer 50mm Summilux-M I thought for certain that the newer ASPH lenses such as the APO 90 involve machine grinding (in addition to molding) in their construction. dan c. At 09:54 AM 19-01-01 -0000, Jem Kime wrote: >Dan, >The first ones were ground by machines, the present ones moulded. >Jem