Archived posting to the Leica Users Group, 2004/05/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thanks to "Thinkof Cole" and also to Michiel Fokkema for your trouble. My Summitar has a serial No 721xxx which I believe is still quite early 1948? . When I get it back I will look to see if the iris blades are flat or curved and then try it !!!! Regards Claude Hayward Thinkofcole@aol.com wrote: >Lager says early Summitars have flat diaphram blades that form a circular >aperture while later Summitars have domed [forward curving] blades that form a >hexagonal opening. He adds that Summitars after Nov. 1945 [@ #587601] are >factory coated and from early 1946 [about #611000] have international apertures to >f16.-- bob cole >_______________________________________________ >Leica Users Group. >See http://leica-users.org/mailman/listinfo/lug for more information > > >