Jammed Lens

[Cloudrunner5k]

I am new here, so I am sorry if this is not the proper forum for this discussion.
I was out shooting sun sets in Hawaii a day ago. Having only my one camera (Pentax SuperProgram) I was swapping lenses every few exposures. I had just taken a wide angle on the ridge/coast line I was on and wanted to switch to my telephoto for some shots of a far off lighthouse. When I toggled the lens release I found that my wide angle lens would turn the 1/4 turn it would typically make, but would not come off the body of the camera. I do not recall having any difficulty putting the lens on, and I feel no resistance rotating the lens on the body but there is no give when I try to pull it off the body.
I am hoping some one might be able to point me in the right direction as far as repairing this. Any help or advise would be greatly appreciated.

 

[dynachrome]

Are you using any AF (auto focus) lenses with this camera? The early Pentax AF cameras/lenses used the screw driver system. In some cases the female end of the screw driver mechanism on the lens would get stuck in or against a pin/contact in the mount. Another possibility? Do you have any of the Ricoh P 'K' mount lenses. These have an extra pin which can also case the lens to get stuck on a Pentax K body. If one of these thingsi s causing the problem you might be able to take a few sheets of stiff paper and jam them in between the pins/contacts of the lens and camera to allow the lens to turn. Is it possible that you turned the lens too far when mounting it?

 

[Helios 1984]

Could you provide more info on the lens ?

 

[John Koehrer]

Is the index mark for infinity on top aligned when the lens is locked in place?