On Wed, 06 Mar 2002 10:18:15 -0500, you wrote: >The Helios 40 and 40-2 is definitely a different lens. I don't know its >optical formula, but its diaphragm has 12 blades, it weighs 900 g, and it >uses 67mm filters.
Helios-40 is Planar-like design, 6 lens/4 groups. Very little difference between 40 and 40-2 (diaphragm preset on 40-2 and 67mm filters - 40 has 66mm). Early version of Zenitar 85/1.4 was called Helionar 85/1.4, it was M42 screw mount lens. >The Jupiter 9, another 85/1.5, I have no specs on. Jupiter 9 is 85/2. Still in production - www.lzos.ru. >Both lenses come only in M42. Early Helios-40 and Jupiter-9 were M39 zenith screw mount (45.2 (?) mm register). Jupiter-9 also was produced in Leica screw mount and Contax bayonet mount for rangefinders (FED/Zorki and Kiev). S.Y. Roman - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
