My DA* 50-135 stopped focusing, but I didn't notice any other problems like you describe. Pentax has since replaced the motor, and I also have a new circuit board. It works nicely, though I still have to run it through more rigorous paces--this weekend hopefully.
Cheers, Christine Sent from my iPad > On Dec 16, 2013, at 5:57 PM, Igor Roshchin <[email protected]> wrote: > > > > I have a question for those people who had SDM (or in general, lens > chip) failed and replaced. > > I see that with one of the SDM lenses my K5 has the aperture and speed > settings rapidly (as in crazily) fluctuating. (And the focus shows "MF", > regardless of the focus selector position.) > I was wondering if this is one of the symptoms of the failed chip or > that could be for a different reason. > > When I had a previous chip failure, I didn't see anything like this. > When the chip failed in your lens, did you see this type of a > fluctuation? > I wonder if could be something else that happened to the lens. > > Igor > > > -- > 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.
