It's not the lens, you focusing screen and "film" plane don't agree. You need to have that fixed...
David J Brooks wrote: > On Tue, Mar 4, 2008 at 8:30 AM, William Robb <[EMAIL PROTECTED]> wrote: > >> ----- Original Message ----- >> From: "Paul Stenquist" <[EMAIL PROTECTED]> >> To: "Pentax-Discuss Mail List" <pdml@pdml.net> >> Sent: Tuesday, March 04, 2008 6:10 AM >> Subject: Re: K20D focus adjustment >> >> >> >I think most lenses will benefit from some fine tuning of the focal >> > point. Although it remains to be seen how accurate the DA lenses >> > might be. The kind of adjustments I'm making are quite fine, and the >> > difference isn't critical for most subjects. About the only place >> > where it comes into play is with wide-open portraits, where eye focus >> > is critical. Of course, those should be manual focused anyway in the >> > studio. But for situations like wedding photography or even my coffee >> > shop portraits, pinpoint autofocus accuracy is an advantage. "A" >> > lenses aren't autofocus, of course, so they just sit there silently >> > without complaint:-). >> >> Manual focus lenses should be more dependant on how accurately the screen >> is placed, although I >> do find myself, from time to time, using the AF confirmation with manual >> focus lenses, in which >> case, I expect focus accuracy may benefit from being tuned in with them as >> well. >> >> William Robb >> > > I first noticed a problem with the A 50 at a small music shoot with > available light. I focused to what my eye thought was good and ignored > the confirmation beep. > They were all horribly BF'd by quite a bit. I posted a sample a month or so > ago. > > Dave > >> -- >> >> >> 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. >> >> > > > > -- Vote for Cthulhu. Why settle for a lesser evil... -- Dr. Jerry Pournelle -- 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.
