Where I've experienced problems with the A series plastic aperture ring is the A28/2.8 lens. The A50's have never caused me any problems, and they are so much more functional then the K's or M's. Regards, Bob S.
On Tue, Feb 7, 2012 at 6:37 PM, Darren Addy <[email protected]> wrote: > On Tue, Feb 7, 2012 at 6:25 PM, Bob Sullivan <[email protected]> wrote: >> I agree. There is not much difference in Pentax 50mm lens performance >> from the K50/1.4 thru M50/1.4, A50/1.4, and FA50/1.4. Same for the >> K50/1.7 thru M50/1.7, A50/1.7, and F50/1.7. I expect the same applies >> to the F50/1.4 and FA50/1.7, but I've never used those particular >> lenses (or even held copies of them). Regards, Bob S. > > If relatively similar optically then one must look beyond the optics > when making a choice. > Shallower DOF. Build quality (the A50 f1.7 is notorious for aperture > ring problems due to plastic internal tab construction that is > apparently not a problem on its siblings lenses. Tactile preferences. > etc. > > I've settled on the A50 f1.4 for the most bang-for-the-buck and > ease-of-use. I keep a K55 f1.8 around just because it is so cheap > (some people seem to prefer the 55 to the 50, but I don't think I'm > one of them). I've got the equiv in SMC Takumars, mostly for my > Spotmatics. > > Darren Addy > Kearney, Nebraska > > -- > 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.
