There is a small pin on the back of SMC takumars which keeps the Auto/Manual switch from being set to Manual when the camera is mounted on a Spotmatic F or ES body. Normally it should just ride on the edge of the adapter ring as it's screwed onto the lens. If the tolerances were at the far ends for the cutouts on the adapter and the position of that pin, (and I have an adapter, Genuine Pentax at that, which is very close to allowing this), then the pin might fall into the cutout locking the lens onto the adapter and the Auto/Manual switch into the manual position. The only way I can imagine to safely remove this would be to disassemble to lens until you could reach the interlock mechanism from inside. I haven't a clue how to do this since I can see only three exposed screw heads on the Takumar and these are probably only set screws holding the DOF scale in place.

dave g wrote:

It's stuck, not mis-threaded and I'm a bit at a loss. Does anyone know
how to get this lens off (at this point if it involves destroying the
lens or adapter it's ok!).

Takumar 1.4 SMC lens
Pentax adapter
Pentax Ist DS camera.

I've had this lens on and off before but something is catching this
time. Also, the auto/manual switch is stuck on auto, which must be
somehow related...?

thanks for any tips!

Dave


--
When you're worried or in doubt, Run in circles, (scream and shout).

Reply via email to