Not sure if anyone can answer this, but the AF 500 FTZ is compatible or can used successfully with which Pentax models, old and new? Sorry, but a genuine comprehensive list would be good. Thank you in advance...

I have a Pentax 645 Zoom f4.5 45~85mm lens, left over from when I sold my 645. I would like to know if anyone can help me with information about what sort of functionality and quality I can expect when I use this lens on the new *ist D? Manual focus, ok, I know this, but what about the *ist light metering, etc...?
Thank you in advance for any help with this.