> Using my A400/5.6 and A2X-S converter, I can simply dial in 800mm > for the SR system. At least I think I can. I've used the 400 alone > and dialed in the 400mm setting. I'll try it today.
Thanks Paul much appreciated, I tend to use a tripod beyond 300mm myself when possible, cerainly beyond 600mm. John ---------- Original Message ----------- From: Paul Stenquist <[EMAIL PROTECTED]> To: Pentax-Discuss Mail List <[email protected]> Sent: Sun, 26 Nov 2006 06:59:33 -0500 Subject: Re: FL information & SD ( was Reservations about DA 16-45) > Using my A400/5.6 and A2X-S converter, I can simply dial in 800mm > for the SR system. At least I think I can. I've used the 400 alone > and dialed in the 400mm setting. I'll try it today. Although under > most circumstances I would use this rig with a tripod anyway. Paul > On Nov 26, 2006, at 6:03 AM, John Whittingham wrote: > > > Hi Adam > > > >> The K100D does not permit you to override focal length parameters. > > > > Damn! > > > >> But I believe that focal length and lens ID are tranmitted seperately. > > > > I'm not sure how that would help. > > > >> I'm not aware of any TC for Pentax bodies which contains actual > >> firmware, which would be necessary to communicate actual focal > >> length to the body. Canon EF TC's have firmware and can do the > >> calculations. > > > > It looks like it's tripod time with TC's then. > > > > Thanks Adam, > > > > John > > > > > > ---------- Original Message ----------- > > From: Adam Maas <[EMAIL PROTECTED]> > > To: Pentax-Discuss Mail List <[email protected]> > > Sent: Sat, 25 Nov 2006 18:49:52 -0500 > > Subject: Re: FL information & SD ( was Reservations about DA 16-45) > > > >> John Whittingham wrote: > >>> Hi Christian > >>> > >>>> It certainly is. However, with the matching 1.4x and 2x EX > >>>> converters it still shows up as 300mm. I'm not sure if that would > >>>> adversely effect SR (600mm vs 420mm vs 300mm). As a point of > >>>> example, the Canon 300/4 and 1.4x converter show as 420mm in the > >>>> EXIF data and the 600/4 + 1.4x show up as 840mm. > >>> > >>> Forgive me I've been away from the list for some time, it was you who > > told me > >>> originally I believe, as well as showing some of your great images. I > > feel OK > >>> with the 300 and converters because I can enter the focal length > >>> manually > > as > >>> long as the camera will let me. I'm pretty sure I should be able to > > overide > >>> the automatic settings, but it remains to be seen. It's the zoom I'm > >>> concerned with knowing some of the problems Canon owners have had to > >>> put > > up > >>> with Sigma lenses such as the 70-200/2.8 EX. > >>> > >>> Regards > >>> > >>> John > >>> > >>> John Whittingham > >>> > >> > >> The K100D does not permit you to override focal length parameters. > >> But I believe that focal length and lens ID are tranmitted seperately. > >> > >> I'm not aware of any TC for Pentax bodies which contains actual > >> firmware, which would be necessary to communicate actual focal > >> length to the body. Canon EF TC's have firmware and can do the > >> calculations. > >> > >> -Adam > >> > >> -- > >> PDML Pentax-Discuss Mail List > >> [email protected] > >> http://pdml.net/mailman/listinfo/pdml_pdml.net > >> > >> ---------------------------------------------------------------------- > >> ------ > > ------------------------ > >> > >> The information transmitted is intended only for the person to whom > >> it is addressed and may contain confidential and/or privileged > >> material. 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Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. ---------------------------------------------------------------------------------------------------- -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
