screw drive for the win! :) On Wed, Jul 24, 2013 at 9:37 AM, Boris Liberman <bori...@gmail.com> wrote: > Zos, he was referring to very low quality of plastics used in the > moving parts of the mechanism and in general to very poor engineering > quality of the whole mechanism. But again - we're playing a broken > phone here. Suffices it to say, I opted not to buy DA 17-70 and > ultimately decided to stay with "good old" screw-driven AF of my Sigma > 17-70... > > On Wed, Jul 24, 2013 at 4:25 PM, Zos Xavius <zosxav...@gmail.com> wrote: >> i think the big problem is that the lubricant seizes on the sdm motors >> rendering them useless. my guess is that they've fixed SDM now that >> they finally admitted it was faulty. they should have offered to fix >> everyone's lenses. way to stand by your products pentax! fuji bit the >> bullet and replaced a bunch of sensors on their cameras. >> >> On Wed, Jul 24, 2013 at 9:18 AM, Boris Liberman <bori...@gmail.com> wrote: >>> Pretty much he said that it was shameful engineering... >>> >>> On Wed, Jul 24, 2013 at 3:35 PM, Zos Xavius <zosxav...@gmail.com> wrote: >>>> what did he say? why would we be insulted? if its poorly built, its >>>> poorly built. >>>> >>>> On Wed, Jul 24, 2013 at 7:40 AM, Boris Liberman <bori...@gmail.com> wrote: >>>>> One of local Pentaxians had 17-70/4. The SDM failed on him and being a >>>>> handy person he took it apart. I won't repeat what he told me so as >>>>> not to insult anyone. It was a very strong arguments against the SDM >>>>> lenses, at least the cheaper ones. >>>>> >>>>> On Wed, Jul 24, 2013 at 2:27 PM, David J Brooks <pentko...@gmail.com> >>>>> wrote: >>>>>> Thanks for the comments so far. Given me some things to think about. I >>>>>> have a fader ND filter at 67mm dia, so the Pentax 17-70 would fit it, >>>>>> but leery of the SDM from what i have read previously. I don >>>>>> t need IS as its in the K-5 body so that would be a wasted Sigma >>>>>> feature. Decisions decisions. >>>>>> >>>>>> Dave >>>>>> >>>>>> On Wed, Jul 24, 2013 at 2:21 AM, Boris Liberman <bori...@gmail.com> >>>>>> wrote: >>>>>>> I concur. Although when I first saw the lens in your hands, Jaume, I >>>>>>> did not expect to own it some day. I should point that it is not that >>>>>>> heavy given the speed and zoom range. It is rather well made although >>>>>>> indeed eventually the zoom becomes creepy. It does have the zoom look >>>>>>> that is handy for transportation, obviously. >>>>>>> >>>>>>> On Tue, Jul 23, 2013 at 9:49 PM, Jaume Lahuerta <jlah...@yahoo.com> >>>>>>> wrote: >>>>>>>> Hi, >>>>>>>> >>>>>>>> I also have the old Sigma 17-70 (actually I think that I have some >>>>>>>> responsibility in Boris owning one...) and I second Boris comments. >>>>>>>> The only complaint is that is is a bit heavy and the zoom eventually >>>>>>>> becomes loose. >>>>>>>> I have physically seen the latest version and I have to admit that it >>>>>>>> looks and feels extremely compact. >>>>>>>> >>>>>>>> However, my favorite compromise range / IQ would be the 18-135. Sigma >>>>>>>> has one but its reputation is worst than the 17-70s and the Pentax one >>>>>>>> seems a bit expensive. >>>>>>>> >>>>>>>> Regards, >>>>>>>> Jaume >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> ----- Mensaje original ----- >>>>>>>>> De: Boris Liberman <bori...@gmail.com> >>>>>>>>> Para: Pentax-Discuss Mail List <pdml@pdml.net> >>>>>>>>> CC: >>>>>>>>> Enviado: Martes 23 de julio de 2013 13:47 >>>>>>>>> Asunto: Re: the 16-45 to 17-70 range >>>>>>>>> >>>>>>>>> Dave, I've (the oldest version of) Sigma 17-70/2.8-4.5. Such lenses >>>>>>>>> can be had for order of USD 250-300. I cannot praise mine enough. It >>>>>>>>> successfully replaced DA* 16-50/2.8. Later versions are 17-70/2.8-4.0 >>>>>>>>> (notice faster long end of the zoom range) and further introduced HSM >>>>>>>>> (Sigma's ultrasonic AF) and OS (Optical image Stabilization). I opted >>>>>>>>> out of these as I wanted something as simple as possible so that it >>>>>>>>> won't break down just because. >>>>>>>>> >>>>>>>>> Optically I've no complaints at all. It just what suits me best right >>>>>>>>> now if and when I have to shoot with DSLR. >>>>>>>>> >>>>>>>>> On Tue, Jul 23, 2013 at 2:40 PM, David J Brooks <pentko...@gmail.com> >>>>>>>>> wrote: >>>>>>>>>> Hey all. >>>>>>>>>> >>>>>>>>>> This last week at the plow demo got me thinking again about my short >>>>>>>>>> zoom, the 16-45. Normally i take two cameras, the D2H with re 70-200 >>>>>>>>>> VR f2.8 and the D200 with the 18-70. I use the 18-70 for the closer >>>>>>>>>> shots when the teams come at me. This year i took the K-5 and used >>>>>>>>>> the >>>>>>>>>> 16-45. It performed fine, but at 45 at the long end just does not >>>>>>>>>> get >>>>>>>>>> what i want before i switch back to the longer zoom. >>>>>>>>>> >>>>>>>>>> So >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Im thinking something along the lines of the Pentax or Sigma 17-70 >>>>>>>>>> ish >>>>>>>>>> lenses, and i think i saw on Henrys site an 18-135??? >>>>>>>>>> >>>>>>>>>> I know these have come up before just looking for opinions. >>>>>>>>>> >>>>>>>>>> Also the 55-30 is still on my list, although the sales person at >>>>>>>>>> Henreys showed me the Sigma version, a bit cheaper and now i'm >>>>>>>>>> humming >>>>>>>>>> on that one. >>>>>>>>>> >>>>>>>>>> Comments about the short zooms or the Sigma 55-300 appreciated, >>>>>>>>>> >>>>>>>>>> Dave >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> Documenting Life in Rural Ontario. >>>>>>>>>> www.caughtinmotion.com >>>>>>>>>> http://brooksinthecountry.blogspot.com/ >>>>>>>>>> York Region, Ontario, Canada >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> PDML Pentax-Discuss Mail List >>>>>>>>>> PDML@pdml.net >>>>>>>>>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>>>>>>>>> to UNSUBSCRIBE from the PDML, please visit the link directly above >>>>>>>>>> and >>>>>>>>> follow the directions. >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> Boris >>>>>>>>> >>>>>>>>> -- >>>>>>>>> PDML Pentax-Discuss Mail List >>>>>>>>> PDML@pdml.net >>>>>>>>> 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 >>>>>>>> PDML@pdml.net >>>>>>>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>>>>>>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>>>>>>> follow the directions. >>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> Boris >>>>>>> >>>>>>> -- >>>>>>> PDML Pentax-Discuss Mail List >>>>>>> PDML@pdml.net >>>>>>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>>>>>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>>>>>> follow the directions. >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Documenting Life in Rural Ontario. >>>>>> www.caughtinmotion.com >>>>>> http://brooksinthecountry.blogspot.com/ >>>>>> York Region, Ontario, Canada >>>>>> >>>>>> -- >>>>>> PDML Pentax-Discuss Mail List >>>>>> PDML@pdml.net >>>>>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>>>>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>>>>> follow the directions. >>>>> >>>>> >>>>> >>>>> -- >>>>> Boris >>>>> >>>>> -- >>>>> PDML Pentax-Discuss Mail List >>>>> PDML@pdml.net >>>>> 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 >>>> PDML@pdml.net >>>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>>> follow the directions. >>> >>> >>> >>> -- >>> Boris >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> 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 >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > > -- > Boris > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions.
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