A chore I have put off for a while, too. And I think my FA-50 1.4 could use a little calibrating... I would love for it to be this simple... I await the bubble-poppers...
:) -c On Wed, Apr 4, 2012 at 10:37 AM, Charles Robinson <charl...@visi.com> wrote: > I don't know why I never thought of doing it this way... > > My FA-50 1.7 has always given me "surprisingly soft" results and I've always > suspected that the focus needed to be calibrated but never had the time. In > the kind of low-light situations where I use it, manual focus is as dodgy as > auto. > > Yesterday I found a website which described a dead-simple way to do it if you > have LiveView (and the K7 has exactly that). No focus targets or brick > walls needed. Here's how it works: > > 1. Set up a target a few feet away. I used a wine bottle. > 2. Set up camera on tripod with center focus point selected. > 3. In Live View, press AF and wait for focus to be locked. > 4. Turn off Live View > 5. Press the AF button again and watch which way the focus ring moves. > Ideally it shouldn't move at all! > 6. If it does move... go into the focus calibration settings in the custom > menu and add/remove points. > 7. Repeat steps 3-6 until the damned ring holds still. Done. > > My FA-50 needed seven correction steps to the left (can't remember if that's > "plus" or "minus") - SERIOUSLY out of whack. My DA-35 only needed 2 steps in > the other direction. My Tamron 28-200 was dead on as is my 16-50. I can't > wait to use the FA-50 in another low-light situation to see if it nails the > focus in a real-world situation now. It never has before. :-( > > It was so simple and easy to do I almost wished I had more AF lenses to try > it on! > > If anyone would like to pop my bubble, please go ahead and tell me why this > isn't the right way to go about it... > > -Charles > > -- > Charles Robinson - charl...@visi.com > Minneapolis, MN > http://charles.robinsontwins.org > http://www.facebook.com/charles.robinson > > > -- > 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. -- 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.
