Archived posting to the Leica Users Group, 2006/11/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Phil, The only numbers I know about are inscribed after the M (meters) symbol after the focus infinity symbol. My current 50 Summilux has a 14 which corresponds to 51.4 mm. My 50 Summicron has a 22 which is 52.2 mm. My 75, 90 and 135 have numbers as well. My older DR and collapsible don't have numbers that I can find on the outside. The number info is in the appendix of the "Leica Lens Compendium" by Edwin Puts. Len On Nov 27, 2006, at 10:10 PM, Phil Swango wrote: > I just unscrewed the optical unit of my rigid v.2 Summicron and > could see > numbers hand-engraved inside the mount. One was the number 53 and > the other > was 16+. I think 53 refers to the focal length. The same is true > of my LTM > 90mm Elmar which is inscribed in pencil with the figures 916 > (91.6?) and > 0130. Anyone know more about this? > > > -- > Phil Swango > 307 Aliso Dr SE > Albuquerque, NM 87108 > 505-262-4085 > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information