I've given up on focus charts--way too slow and hard to judge except with fast lenses.
Using moire patterns, though, works beautifully. Here is the info: http://www.northlight-images.co.uk/article_pages/cameras/1ds3_af_micoadjustment.html or http://tinyurl.com/6e4yng Rick http://photo.net/photos/RickW --- On Mon, 4/11/11, Paul Stenquist <[email protected]> wrote: > From: Paul Stenquist <[email protected]> > Subject: Re: Focus chart help, please > To: "Pentax-Discuss Mail List" <[email protected]> > Date: Monday, April 11, 2011, 7:09 AM > > On Apr 11, 2011, at 12:49 AM, Christine Aguila wrote: > > > > > ----- Original Message ----- From: "William Robb" > <[email protected]> > >> > >> I use a similar method to yours for dialing in > lenses. I focus on an object (in my case a clock dial) at > some distance from the camera using center point AF, and I > then adjust AF by how well what I was focusing on is in > focus. > > > > > > > > Thanks for suggesting this. I think I'll use > this method from now on. Cheers, Christine > > Although without any indicators in the foreground or > background, how can one tell whether the camera is front > focusing or back focusing? With a chart that is at 45 > degrees to the camera, you have a scale to work with. And as > long as the chart has a good target in the center and the > camera is set to single-point autofocus, I don't see what > can go wrong. The clock can show that you're not achieving > good focus, but it can't tell you which way to go with the > adjustment. > Paul > > > > -- > > 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. > > > -- > 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. > -- 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.
