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.
The Jupiter 9, another 85/1.5, I have no specs on. Both lenses come only in M42. Fred wrote: I have heard of the "Helios 9" 85/1.5, but I have been unable so far to find out about its optical formula or to find a lens diagram for it, so I don't know how this K-mount Zenitar 85/1.4's 7 elements in 6 groups compares to the Helios lens. Paul Franklin Stregevsky - 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 .
