> Mike, are you sure the Takumar SMC 85 mm. 1.8 and the SMC Pentax > (K) 85 mm. 1.8 are the same lens? According to Keppler's "The > Asahi Pentax Way" the Takumar has got 5 elements and goes up to > f:16. The Pentax K has got 6 elements and closes up to f:22
First, I wouldn't worry about the difference in smallest aperture - that's not a difference in the glass, nor is it likely to be significant for portrait use in any case, either. (And, it's not unusual - many of the screwmounts went only to f/16.) As for the glass, well, you don't want (for this application) the Auto-Takumar 85/1.8 (5 elements in 4 groups, and only a semi-automatic diaphragm), but instead you want the SMC Takumar 85/1.8 (6 elements in 6 groups), which is the same as the K 85/1.8 (except for the mount, the smallest aperture, and - I would assume - a small difference in SMC coatings). And, I don't think that there was more than one version of the SMC Takumar 85/1.8, so you can't get "the wrong one" by mistake (someone please correct me if I'm wrong on this). Fred - 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 .
