That should read "The K20, K7 and K-5 have a function... On Nov 2, 2010, at 10:48 PM, paul stenquist wrote:
> The K20, K7 and K=t have a function which allows you to dial in the autofocus > for each of your lenses, using plus and minus scales to correct for front or > rear focus. Most camera/lens combinations aren't perfect matches right out of > the bos. While other methods have been noted here, I generally use a scale > printed on 13 x 19 paper. I place it on the floor. Then I mount the camera on > a tripod and aim it at the center of the scale on a 45 degree angle. I shoot > a frame with the lens wide open, convert it and check it on my monitor. if > the line in front of the center target is sharper than the center, I know the > lens is front focusing. If a line to the rear of the center is sharper than > the center, I know the lens is rear focusing. Then I adjust the camera and > repeat the test. It's a big effing pain in the ass, but worth the effort. > Paul > On Nov 2, 2010, at 9:38 PM, Tanya Love - personal email wrote: > >> Erm, at the risk of sounding like a very unprofessional, professional, what >> is focus adjustment? >> >> Tan.x >> >> -----Original Message----- >> From: [email protected] [mailto:[email protected]] On Behalf Of paul >> stenquist >> Sent: Wednesday, 3 November 2010 11:17 AM >> To: Pentax-Discuss Mail List >> Subject: Re: K-5 here, high iso samples >> >> Thanks. I'll take a look. >> Paul >> On Nov 2, 2010, at 8:23 PM, Rick Womer wrote: >> >>> That's pretty impressive! But my K7 has only 2200 exposures on it, so I'm >> trying not to be =too= impressed! >>> >>> Are you acquainted with the moire-based, live-view-employing focus >> adjustment technique? It made me stop dreading focus adjustment. >>> >>> http://www.northlight-images.co.uk/article_pages/cameras/1ds3_af_micoa >>> djustment.html >>> >>> Cheers, >>> >>> Rick >>> >>> http://photo.net/photos/RickW >>> >>> >>> --- On Tue, 11/2/10, P N Stenquist <[email protected]> wrote: >>> >>>> From: P N Stenquist <[email protected]> >>>> Subject: K-5 here, high iso samples >>>> To: "Pentax-Discuss Mail List" <[email protected]> >>>> Date: Tuesday, November 2, 2010, 5:17 PM My K5 arrived a few hours >>>> ago. My first thought was that it was defective and wouldn't >>>> autofocus. As usual, I'd forgotten to set the diopter to "almost >>>> blind." Once I realized that I was the only one not focusing, I shot >>>> a few pics at ISO 6400 and 12800, just for grins. I converted them >>>> from RAW with the default ACR settings. No additional sharpening. I >>>> did increase the exposure a bit on the coke sign, since the largely >>>> white background let it slightly under. Have yet to check exposure >>>> for any necessary standard comp setting, but it looks pretty close. I >>>> also have to check autofocus calibration for all my lenses. I hate >>>> that job, but consider it a necessity with any new camera. Maybe >>>> tomorrow. Anyway, ere are a few pics. >>>> All are with the DA* 16-50. >>>> >>>> This is ISO 6400, f4, 1/125th: >>>> http://photo.net/photodb/photo?photo_id=11890890 >>>> >>>> 100% drop of same frame: >>>> http://photo.net/photodb/photo?photo_id=11890891 >>>> >>>> This frame is ISO 12,800, f4 1/50th. The camera focused in my nearly >>>> dark basement: >>>> http://photo.net/photodb/photo?photo_id=11890892 >>>> >>>> --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. >> >> >> -- >> 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.
