I bought my k-r used with about 2000 shutter clicks, and have put on about 3000 since then. I've never had this behavior with any of my K mount lenses mind you, so I'm hopeful that it's not the camera. It would be pretty devastating if it is.
So the problem lies with the takumar 55mm 1.8 manual lens I bought. After taking a few photos with it I'll hear a shutter click, and then from there on anytime I press any button on the K-R, it sounds like the shutter is firing leaving me unable to take any photos at that point. I want to rule it out as a bad lens, but I have also noticed something that might point towards it being a problem with the camera. After I take the manual lens off, and attach my regular K mount lens, it will make the shutter firing noise only once immediately after I turn the camera on, and then I won't hear it again.
From what I've read there can be a ton of different causes. I've updated the firmware to the latest version, and I've made sure the contacts between lenses are squeaky clean. What I haven't been able to do is try a different m42 adapter, or try using the AA batteries. Those aren't really an option right now, and I shouldn't have to be buying those things for my camera to work correctly :/.
The whole thing is really scary. Even though my regular lenses work fine, the fact that this problem could soon spread to every lens is something I can't stop thinking about
Last edited by csmoore; 01-28-2013 at 08:26 PM.