For a flat focus test all you need is a textured wall, a tripod and a level. Just make sure the camera is parallel to the wall and the lens is perpendicular to the wall. Then shoot wide open. It was easy to spot the focus error on my first 16-50. But this is an assembly problem that generally shows up immediately. How long have you had the lens? Paul
On Nov 28, 2010, at 6:07 PM, eckinator wrote: > hi all > a lot of the photos taken today lead me to think my 16-50 may be > decentered - there is tons on inexplicable softness in an otherwise > flat field - can anyone please point me towards a link with a chart > that will help me to illustrate the problem for when I turn the lens > in for repair ... again ... > thanks in advance > ecke > > -- > 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.
