Archived posting to the Leica Users Group, 2006/05/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Greg, Your lens lies beyond the serial number range for the thorium glass lenses. I have a Takumar that is also beyong the generally accepted range and it is most yellow so I think the color is a maybe. One of my Summicrons is well under the 1 mil mark and it was sorta yellow before I had it cleaned up by John at which point it became pretty clear. I am looking around for a 35 FD F2 that was allegedly built with thorium glass as one I had in the mid seventies was very good indeed. Don don.dory@gmail.com On 5/24/06, GREG LORENZO <gregj.lorenzo@shaw.ca> wrote: > > Joseph Low writes in part: > > > Understand that if the s/n are below 1m - they have the radio > > lens element supplied by an UK company > > > > My hot glass 50 Summicron has serial number 1041XXX and very distinctly > yellow. > > Regards, > > Greg > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >