I had a similar thing happens with a 1.4L T/C several years back. In that case, it stuck open and blew out images. I manually activated the aperture blades and confirmed the problem and sent it to Pentax repair. The first time I checked it after getting it back, it stuck. I tried and tried to get it to stick again, but was unable to. I used it on an A 300mm f/2.8 for some years after that with no problem. However, I don't think I ever used it after that without checking and hoping.
Jack --- On Sat, 2/27/10, Tom C <[email protected]> wrote: > From: Tom C <[email protected]> > Subject: DA 18-250 Working Again > To: "Pentax-Discuss Mail List" <[email protected]> > Date: Saturday, February 27, 2010, 9:00 PM > I've been complaining about my fairly > new and little used DA 18-250 > not being able to auto focus and that it apparently was > stopped down > continually. > > Yesterday I had a moment of time waiting to meet some > friends at the > bottom of the road, so I took it out amd tried it > again. Same issue. > I took it off the camera, brain kicked in, and I manually > actuated the > aperture lever and saw the diaphram open and close. > Hmm. Put it back > on the body and it works like new. > > What's up do you think? Just stuck? > > Tom C. > > -- > 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.
