Been there, done that. On Mar 23, 2014, at 10:53 PM, P.J. Alling <[email protected]> wrote:
> Cut and paste editing usually benefits from pasting. I cut out a big part, > and tried to rearrange my thoughts, obviously I failed in more ways than one. > > > On 3/23/2014 7:26 PM, Paul Stenquist 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. >> > > > -- > 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.
