I think that should work (and does indeed sound like a simpler way to go about it), but I'd still want to use a flat surface for the target. There's no guarantee that the AF sensor is locking on exactly the same part of the scene as the live view AF, so a wine bottle (with a curved surface) might not be the best choice.
On Wed, Apr 4, 2012 at 10:55 AM, Christine Nielsen <ch...@inielsen.net> wrote: > 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. -- 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.
