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Hello everyone,
I have almost the same problem like LarsW in his post
https://www.pentaxforums.com/forums/pentax-beginners-corner-q/186690-aperture...nual-lens.html, except my aperture won't stop down in any situation, it stays still wide open.
Until now I was using my K-5 just with AF lenses or M42 lenses and everithing was just fine. Yesterday i bought MC Petri 135mm f3.5 like this one
Pentax K fit Petri 135mm 1:3.5 MC Telephoto Portrait lens | eBay . Lens apears to be in great condition with just few pieces of dust in it.
- Focusing moves nice and smoothly
- Aperture ring moves also pretty nice and the aperture is closing and opening respectively, when not on camera.
- Aperture blades are dry and clean.
- The stop-down lever moves with nature resistance and returns back in default position with the speed of light.
- The "Using aperture ring" in camera menu is set to "Permitted"
Everithing seems to be set well, but the aperture stays still wide open and I don't have a clue why. I've tried Tv,Av,TAv, M modes .. still the same result. Please tell me, that I've just missed something and my camera isn't broken.
Thx, Kousalik