Hi all,
I recently purchased an old second hand SMC 50mm 1.7 (k mount). It's an all manual jobby.
There's a problem however. When I attach it to my K-3 body the aperture opens up to f/1.7 and stays there. The aperture ring moves through all positions, but the aperture blades themselves remain wide open. If I loosen the lens about half an inch from its locking position then all f stops work fine and the lens does its job. But this irritates me, and I'd like to remedy it if possible. Does anybody know why this is happening, and more importantly, how to rectify it?
Thanks in advance.
p.s. It's not possible to get refunded.
Last edited by Noc; 10-20-2014 at 08:32 AM.