I have a DA* 16/50/2.8 that I would sell. Pentax Marketing people worked hard to get me this replacement for a problematic lens. I was shooting the North American International Auto Show for The NY Times and Pentax scrambled to get me a lens that was said to be tested and perfect. Lightly used since then, and it seems to be very good. It's yours (or someone else's) for $300. Paul via phone
> On Sep 16, 2017, at 4:34 PM, John <[email protected]> wrote: > > Just after reading this thread I encountered Augustine's Laws "put forth by > Norman Ralph Augustine, an American aerospace businessman who served as Under > Secretary of the Army from 1975 to 1977." > > Law #18 may be applicable here: > > Law Number XVIII: It is very expensive to achieve high unreliability. It is > not uncommon to increase the cost of an item by a factor of ten for each > factor of ten degradation accomplished. > > https://en.m.wikipedia.org/wiki/Augustine%27s_laws > >> On 9/15/2017 21:32, Rick Womer wrote: >> Yeah, I’m sure they’ll fix it, too. >> Meanwhile I have out-of-town leisure time in late Oct and early Nov, and may >> not have a working, suitable zoom. >> Argh. >> Should have bought the Sigma. The Pentax seemed the better lens, though, and >> I thought =surely= they’d have fixed the SDM in 9 years! >> Rick >>> On Sep 15, 2017, at 7:24 PM, Paul Stenquist <[email protected]> wrote: >>> >>> That's an older design. I assume they're locked into the original SDM >>> Motor, but I'm sure they'll fix it. >>> >>> Paul via phone >>> >>>> On Sep 15, 2017, at 10:33 AM, Rick Womer <[email protected]> wrote: >>>> >>>> The SDM motor is failing on my 4-month old DA 17-70 lens. >>>> >>>> One would think that in NINE years of production Pentax would have >>>> corrected the well-known SDM motor problem. >>>> >>>> Oy. >>>> >>>> Rick >>>> >>>> P.S. How long is Precision taking to fix things these days? >>>> > > > > -- > Science - Questions we may never find answers for. > Religion - Answers we must never question. > > -- > 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.
