Hi, Could this be your problem?
http://www.robertstech.com/flange.htm Just helped a local pentax user through this problem... Bong On Fri, Aug 26, 2011 at 6:16 AM, C. Paige Gabhart <[email protected]> wrote: > I'm new to this list and fairly new to digital photography. I have enjoyed > seeing some of the photos that have been posted by the members. > > I have had a Pentax K1000 for donkey's years, which I have not used much in > a long time. I just purchased a used K-7 body. One of the reasons I stuck > with Pentax was because I had three lenses: (Focal MC 1:2 28mm, Pentax-M 1:2 > 50mm, a 50mm and a Vivitar MC 70-210. 1:4.5 Macro Focusing zoom) > > My thinking was that it would be economical to be able to continue to use > them. The two fixed lenses mount fine. The zoom, however, will not as it > has a metal rim that is in the way. Can anyone provide any information on > how to mate the Vivitar up with the K-7, or should I just bite the bullet > and buy another lens? > > Also how much of a problem is it to use the "M" and "MC" lenses? > > Thanks for any assistance you can offer. > > > Paige > > -- > 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. > -- Bong Manayon http://bong.manayon.net -- 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.

