Wow, loads of info. kind of overwhelmed with it all!
thanks for all the quick replies. Yes the mount I have is the AI one...I did have the AIS version too, which I needed for a very brief foray I had with a Nikon FA.
It's certainly the answers I wanted to hear....I can live with loss of matrix metering for the time being.
I'll read through all the links, and gather the info
then comes the small matter of finding a reasonably priced one.
thanks everyone....so glad I joined here