Paul Stenquist blurted: > I may have had a couple of cocktails today, but I have no idea > what you’re trying to say here, and I doubt that total sobriety would help.
Mark! On Sun, Mar 23, 2014 at 7:26 PM, Paul Stenquist <[email protected]> wrote: > > On Mar 23, 2014, at 6:25 PM, P.J. Alling <[email protected]> wrote: > >> Well, actually it's the EV of the scene you're trying to focus on a bright >> scene even with a slow lens will. > > I may have had a couple of cocktails today, but I have no idea what you’re > trying to say here, and I doubt that total sobriety would help. > > >> The maximum aperture of the primary lens is only a guideline. >> >> On 3/23/2014 5:47 PM, Alastair Robertson wrote: >>> correct me if I am wrong, but it is the maximum aperture of the lens >>> TC that matters on an automatic lens, not what you have stopped it >>> down to, since the AF is done with the lens wide open just before the >>> lens is stopped down and the shutter opens. So a setting of F22 on an >>> F5.6 setup will make no difference to the AF capability compared with >>> say F8. Putting a TC on a slow lens is a problem because even wide >>> open, the light levels are already too low for accurate AF. I doubt >>> whether Alan's F9-11 combination will allow AF because this is as open >>> as the lens can go >>> >>> Alastair >>> >>> On 24 March 2014 09:25, Paul Stenquist <[email protected]> wrote: >>>> I've tried autofocus at up to f22 with the 1.5X and the DA8 60-250, and it >>>> worked fine, although that was with a high contrast scene. >>>> >>>> On Mar 23, 2014, at 2:32 PM, Alan C <[email protected]> wrote: >>>> >>>>> Very nice. What was the range, Paul? You've inspired me to dig out my old >>>>> Vivitar MC 2x teleconverter which I used to use with a Vivitar (A) 75-200 >>>>> f4.5. I'll try that combination & also with the FA100-300 f4.5-5.6 on a >>>>> distant subject with the K7 & see what happens. MF, of course. It will be >>>>> interesting to see if the AF confirm still works at f9 - f11. >>>>> >>>>> Alan C >>>>> >>>>> -----Original Message----- From: Paul Stenquist >>>>> Sent: Sunday, March 23, 2014 7:54 PM >>>>> To: Pentax-Discuss Mail List >>>>> Subject: PESO Flying Rat, European Version >>>>> >>>>> Shot on a lake this afternoon. K-3 DA* 60-250/4 with the 1.4X converter, >>>>> f5.6, 1/2500, 350mm, ISO 400 >>>>> >>>>> http://photo.net/photodb/photo?photo_id=17716268&size=lg >>>>> -- >>>>> 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. >>>>> >>>>> --- >>>>> This email is free from viruses and malware because avast! Antivirus >>>>> protection is active. >>>>> http://www.avast.com >>>>> >>>>> >>>>> -- >>>>> 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. >> >> >> -- >> A newspaper is a device for making the ignorant more ignorant, and the >> crazy, crazier. >> >> - H.L.Mencken >> >> >> -- >> 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. -- -bmw -- 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.
