On Feb 25, 2011, at 7:43 PM, John Sessoms wrote: > From: Paul Stenquist >> On Feb 25, 2011, at 1:01 PM, steve harley wrote: >> >>>> On 2011-02-25 05:02 , Paul Stenquist wrote: >>>>>> There are alternatives that are somewhat easier to use but >>>>>> more difficult to construct, such as a method where the >>>>>> target is a slope that rises at 45 degrees and the camera is >>>>>> level. >>>> >>>> easy to construct: i've used a yardstick leaned against a wall, >>>> though only to check lenses, since my k200d doesn't have a focus >>>> correction feature >>>> >>>> i guess a yardstick on the ground would be a little easier as i >>>> could raise the tripod to a comfortable height >>>> >> Or perhaps a yardstick on a table leaned against a wall. But unless >> your yardstick has sharp, well defined markings, it might not work >> that well. My target is printed on good photo paper with fine lines >> at high resolution. That makes it easy to see which line is most in >> focus. With wide angles, it can be a close call. > > There are several targets available out on the web. You print them on a laser > printer then fold them along the indicated lines and you've got your 45 deg > target. You place the target on a table and your camera on a tripod. > > Here's one I found with a 10 second Google search ... > > http://www.k10dbook.com/AFCHART.pdf
I've seen that. I can't print it large enough on a 13 x 10 printer to make it useful. But the concept is interesting. Although the meter stick leaning against a wall or my target on the floor works fine. I prefer my target of evenly spaced fine lines to the complexity of this version. Paul > > An article that tells how to use it with the K20D: > > http://www.zimbio.com/Digital+Cameras/articles/839/AF+adjustment+test+chart+help+Pentax+K20D > > You'll probably have to cut 'n paste that URL. Here's the TinyURL version: > > http://tinyurl.com/6x22z44 > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1204 / Virus Database: 1435/3466 - Release Date: 02/24/11 > > > -- > 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.
