John, I'm sorry to hear that. My older combination of A300/4 and AF1.7X lets me set a 500mm lens length for shake reduction on the K20D. And it does make a difference. If you want to see some sorry pictures, try switching from the A20/2.8 and a 20mm shake reduction setting to the A300 without resetting the 20mm. The bird pictures had an odd unsharpness and blur I couldn't fathom, then I looked at the EXLF data. No, I didn't shoot these with the 20mm! Who says shake reduction doesn't work. Regards, Bob S.
On Tue, May 12, 2009 at 6:43 AM, John Whittingham <jo...@carmel.ac.uk> wrote: > The main problem with the SR is the camera identifying later lenses > automatically. The DA*300/4 for example fitted with a 1.5x TC (450mm) is seen > only as 300mm with no option to override the setting manually. Therefore you > have 450mm with shake reduction set for 300mm, 50% out and it's a PITA. I've > winged about it before at length so I won't bore you all anymore with it. > > Regards, > > John > ________________________________________ > From: pdml-boun...@pdml.net [pdml-boun...@pdml.net] On Behalf Of Joseph > McAllister [pentax...@mac.com] > Sent: 11 May 2009 22:42 > To: Pentax-Discuss Mail List > Subject: Re: PESO - Wagtail > > This may have been touched on before, but I don't remember it, and I'd > like to know. > > Do the DSLR cameras know when you are using the AF 1.7x teleconverter? > Or any teleconverter, for that matter? So when you slap a construct on > the camera, do you tell it (for shake reduction info) the focal length > of the lens, or the focal length of the combination? > > My A* 300mm ƒ4.0 with the AF 1.7x. 300mm? or 425mm? > > Joe > > On May 11, 2009, at 10:42 , Tim Øsleby wrote: > >> Focus wise the F 1,7 does a good job with my DA* 300. It's locks fast, >> sometimes faster than the DA* 300 alone. I was refering to image >> quality when saying it didn't seem tp like other lenses. But fringing >> or abrivation or whatever it is, is unaceptable. steping down at least >> two steps, more in high contrast situations is needed > > If it doesn’t excite you, > This thing that you see, > Why in the world, > Would it excite me? > —Jay Maisel > > Joseph McAllister > pentax...@mac.com > > > > > > -- > 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. > -- 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.
