On Mar 2, 2011, at 9:41 AM, Boris Liberman wrote: > On 3/2/2011 1:08 AM, Jens wrote: >> But what about the stains.... >> I hope my K-5 deosn't show this disease... >> Is it over - or still a major problem? >> How do I discover if there's a problem - by shooting a bright frame into the >> light/sky, or...? >> >> Regards >> Jens > > Jens, as a recent K-5 acquirer I can tell you this: > > 1. You can open a file from your K-5 in PhotoMe. If the camera production > date is after late Dec 2010 - you are most likely fine. They fixed the > problem thence. > > 2. You can mount your longer lens (I did it with Sigma 24-60 at 60 mm, but > longer may be better) and take a series of shots at infinity with +1 Ev > exposure comp of a blue sky or something that is uniformly well lit. Then you > can examine the files. >
For sensor testing purposes, if you shoot the sky, you should set the focus at the minimum distance. If you shoot a piece of paper that's two feet in front of the lens, you should set the focus at infinity. Set the stop down to at least f11. I tested at f22. You don't have to hold the camera steady. Paul > Also you can look here: > http://enticingthelight.com/2010/12/01/review-pentax-k-5/#stains > or on Pentax Forums. > > Boris > > > -- > 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.
