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" <[email protected]> > 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 > [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. > -- Equine Photography www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ Ontario Canada -- 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.
