The SR remains off on mine when I use a long lens these days, especially if using a rear converter. I've resorted to fast shutter speeds as SR has been proven to be ineffective on longer lenses and only complicates the issue.
John ________________________________________ From: pdml-boun...@pdml.net [pdml-boun...@pdml.net] On Behalf Of P. J. Alling [webstertwenty...@gmail.com] Sent: 21 May 2010 07:12 To: Pentax-Discuss Mail List Subject: Re: Sigma OS available for Pentax! [Scanned] [Spam score:8%] It better contain it's own power supply as well if you're going to mount it on a K1000. The other problem I see is that if the camera has no information on what the lens is doing then in camera SR will have to be switched off or the two systems will tend to over compensate, possibly by quite a lot. On 5/20/2010 8:33 PM, Anthony Farr wrote: > If the lens contains its own shake sensor there's no need for the > camera to have SR at all. Theoretically, it'd work on a K1000 if you > didn't mind manual focusing. > > regards, Anthony > > "Of what use is lens and light > to those who lack in mind and sight" > (Anon) > > > > On 21 May 2010 07:34, P. J. Alling<webstertwenty...@gmail.com> wrote: > >> On Pentax, yes. Especially since Pentax doesn't support Optical >> Stabilization. >> >> On 5/20/2010 5:08 PM, eckinator wrote: >> >>> Is use of them mutually exclusive? >>> Cheers >>> Ecke >>> >>> 2010/5/20 John Whittingham<jo...@carmel.ac.uk>: >>> >>> >>>> >>>> http://www.dpreview.com/news/1005/10051401sigma120mm400sonypentax.asp#press >>>> >>>> Could be of interest to all those finding SR useless on long lenses, the >>>> 150-500 APO HSM is already listed at Sigma UK. >>>> >>>> John >>>> -- >>>> 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. >>>> >>>> >>>> >>> >>> >> >> -- >> {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 >> Courier New;}} >> \viewkind4\uc1\pard\f0\fs20 I've just upgraded to Thunderbird 3.0 and the >> interface subtly weird.\par >> } >> >> >> -- >> 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. >> >> > -- {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Courier New;}} \viewkind4\uc1\pard\f0\fs20 I've just upgraded to Thunderbird 3.0 and the interface subtly weird.\par } -- 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.
