In article <32369EC9.2BDE@simmons.swmed.edu>, walberg@simmons.swmed.edu says...

>I've just got my first Nikon F-series camera- an F2AS.
>I've got no preAI lenses yet, but I have a question about their
>use on this F2.
>Is stop-down metering required to use preAI lenses on an F2AS?

Yes, as it is with the other F2 model with an "A", the F2A.

>How about on the F2SB and F2S, which do not have AI metering?

They will couple to non-AI and AI lenses with the prong at f5.6,
but require stop-down metering with lenses without the prong.

> The F2AS has a lever which is moved by the aperture ring for
>meter coupling with AI and AIS lenses. That lever can be pushed back
>and up to get it out of the way for mounting preAI lenses, but there
>seems to be no coupling to connect the meter to preAI lenses. I
>presume that the F2SB and F2S have the pin that couples to the
>fork/prong mounted on the outside of the lens-Is that right?

Yes. BTW, The F2A/F2AS will meter-couple with AF, E, and P
lenses, also.

> Which of the finders for the F (which, of course, are all
>nonAI) have the pin that couples to the fork/prong on the lens?

All that have a meter in them.
Hope This Helps