Hi there guys, I'd like to ask for some help. Recently I bought a Hanimex 135mm f/2.8 manual lens. It looks used, but mechanically it works like a charm. The aperture blades aren't stuck, the aperture lever is working as it should. At least in my hands. The problem is when I mount it on my K-x, and try to use it in manual exposure, I can't stop it down using any of the buttons, EV +/-, AF/AE-L, Green Button set to Tv Shift, nothing stops down the lens even though the aperture ring isn't set to 2.8. USING APERTURE RING is set to PERMITTED. And yes, the ring is working while the lens is off camera. It doesn't have an "A" setting. So when I push the Green Button while the ring is set to 11 for example, it does not stop the lens down, instead takes a meter reading at 2.8. When I take the shot, the camera stops down to the ring setting and takes the shot with the shutter setting metered to f/2.8. So shots taken on other aperture value than f/2.8 are always underexposed. But it seems like the aperture lever is operational because at exposure the lever is released. But to take a meter reading I simply cannot stop down.
Do you guys have any ideas what could cause the problem? Thank you for your help.
Last edited by SamWarrick; 09-05-2010 at 11:13 PM.