Zos, you have to realize that availability of service, its quality and the fact that I normally don't have backup for everything (such as every lens, etc) are important factors here. If you have good service and have sufficiently many lenses, the SDM may not pose that much of an issue.
On Wed, Jul 24, 2013 at 4:51 PM, Zos Xavius <[email protected]> wrote: > screw drive for the win! :) > > On Wed, Jul 24, 2013 at 9:37 AM, Boris Liberman <[email protected]> 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 <[email protected]> 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 <[email protected]> wrote: >>>> Pretty much he said that it was shameful engineering... >>>> >>>> On Wed, Jul 24, 2013 at 3:35 PM, Zos Xavius <[email protected]> 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 <[email protected]> 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 <[email protected]> >>>>>> 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 <[email protected]> >>>>>>> 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 <[email protected]> >>>>>>>> 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 <[email protected]> >>>>>>>>>> Para: Pentax-Discuss Mail List <[email protected]> >>>>>>>>>> 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 <[email protected]> >>>>>>>>>> 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 >>>>>>>>>>> [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. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> Boris >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> 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. >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> Boris >>>>>>>> >>>>>>>> -- >>>>>>>> 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. >>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> Documenting Life in Rural Ontario. >>>>>>> www.caughtinmotion.com >>>>>>> http://brooksinthecountry.blogspot.com/ >>>>>>> York Region, Ontario, Canada >>>>>>> >>>>>>> -- >>>>>>> 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. >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Boris >>>>>> >>>>>> -- >>>>>> 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. >>>> >>>> >>>> >>>> -- >>>> Boris >>>> >>>> -- >>>> 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. >> >> >> >> -- >> Boris >> >> -- >> 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. -- Boris -- 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.
