most of the early smcK lenses were just screw to K conversions, but the smcK mechanics were not as nice as the st/smc screw mechanics.
There were some optical exceptions though,the K18/3.5, K20/4, K28/3.5, k200/2.5 were all new designs optically. -- J.C. O'Connell (mailto:[email protected]) Home Page - www.jchriso.com Join the Audio CD PLAYER DISCUSSION list - http://tech.groups.yahoo.com/group/cdplayers/ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Bob Sullivan Sent: Tuesday, August 25, 2009 4:51 PM To: Pentax-Discuss Mail List Subject: Re: K55/1.8 question Scott, I think so... The screw mount 55/1.8 SMC-Takumar was the standard lens for the last Spotmatics. The K55/1.8 was introduced with the KM, KX, K2 as the standard lens. Only later did the K50/1.7 appear. In fact, there is a whole line of SMC knock-offs. The lens sizes and formulas(?) were just re-issued in K-mounts. (I believe the formulas are the same, but no Boz's site for comparison.) With the ME and MX cameras, Pentax re-designed the whole line to be smaller and have 49mm filter sizes(mostly). The K135/2.5 and K85/1.8 are great holdovers from the SMC screwmounts and premium quality lenses in either mount. Regards, Bob S. On Tue, Aug 25, 2009 at 3:27 PM, Scott Loveless<[email protected]> wrote: > Hey there. > > Quick question. I have an SMC-Takumar 55/1.8 screw mount lens that I > really like a lot. Is the K55/1.8 the same optically? > > -- > Scott Loveless > Cigarette-free since December 14th, 2008 > http://www.twosixteen.com/fivetoedsloth/ > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

