Re: Sigma OS lenses

2014-02-12 Thread Jan van Wijk
Hi Rob, On Wed, 12 Feb 2014 16:54:16 +1100 Rob Studdert wrote: Jan, only one of my Sigma lenses has OS and I don't use it as it's a 17-50mm and offeres no advantage over in body SR but it does work. Yes, I guess for sucg a short lenas there is little difference ... That said the electronics

Re: Sigma OS lenses

2014-02-12 Thread Rob Studdert
With my K5 and Sigma 70-200/2.8 non-OS with the rear screen off and af on the rear button plus saving RAW+jpg I can regularly get over 1000 shots to a single battery :) On 13 February 2014 08:50, Jan van Wijk pen...@dfsee.com wrote: Hi Rob, On Wed, 12 Feb 2014 16:54:16 +1100 Rob Studdert

Re: Sigma OS lenses

2014-02-11 Thread John
On 2/10/2014 4:39 PM, CollinB wrote: Anyone here shooting them? I looking at the 70-300 and 150-500. Nice. No screw AF. Do the Sigma OS lenses have in lens OS in their Pentax or Sony (Minolta) mount versions? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman

Re: Sigma OS lenses

2014-02-11 Thread Stanley Halpin
On Feb 11, 2014, at 12:31 PM, John johnsess...@yahoo.com wrote: On 2/10/2014 4:39 PM, CollinB wrote: Anyone here shooting them? I looking at the 70-300 and 150-500. Nice. No screw AF. Do the Sigma OS lenses have in lens OS in their Pentax or Sony (Minolta) mount versions

Re: Sigma OS lenses

2014-02-11 Thread Stanley Halpin
? I looking at the 70-300 and 150-500. Nice. No screw AF. Do the Sigma OS lenses have in lens OS in their Pentax or Sony (Minolta) mount versions? The 150-500 Pentax mount has their OS built in. I’ve used it both ways - Pentax IS off + Sigma OS on, or Pentax IS on + Sigma OS off

Re: Sigma OS lenses

2014-02-11 Thread Jan van Wijk
Hi Collin, On Mon, 10 Feb 2014 16:39:37 -0500 CollinB wrote: Anyone here shooting them? I looking at the 70-300 and 150-500. Nice. No screw AF. I have been using using the 50-500mm for well over a year now. Unlike Rob (Studdert that is :) mine seems to perform fairly well at 500mm, wich

Re: Sigma OS lenses

2014-02-11 Thread Rob Studdert
Jan, only one of my Sigma lenses has OS and I don't use it as it's a 17-50mm and offeres no advantage over in body SR but it does work. That said the electronics required to stabilize the moving internal element still use power so the OS lenses are more power hungry then their non-OS

Sigma OS lenses

2014-02-10 Thread CollinB
Anyone here shooting them? I looking at the 70-300 and 150-500. Nice. No screw AF. -- 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.

Re: Sigma OS lenses

2014-02-10 Thread Rob Studdert
Yep, OS is switched off in preference to in body SR though it still adds drain to the system, I don't know that any of the current Sigma lenses use screw AF, in any case the HSM focus seems very fast compared with Pentax SDM from my albeit limited experience and the reports that I have read from