I just came into a bucket list camera for me. I am the proud owner of a rough looking Contax RTS from 1975. I also won an auction for a 35mm ML lens. The RTS has been on "want" list for a long time. I came across the 35mm at a good price and though I have other ML lens .. I thought this might be a good compliment.. ie one I don't have I've had the RTS at least a week and decided I would try the combination out. Not thinking too much about it, I mounted the lens and was off. As soon as I metered the usual scene I thought I must not have set the meter right .. but although the lens was completely shut down, the Fstop registration was showing F8 not F16 as set. The proposed readings were 2 stops off. I went back and then checked the other ML lenses I have, and they all registered correctly. I've examined the mount and can't see anything amiss or bent etc. Any insight is welcome!!