Non-AI compatibility question with AF bodies
have a question regarding non-AI lenses & AF bodies
I have an opportunity to purchase a Vivitar Series 1 90mm f2.5 macro (a lens which I used to use in my pre-Nikon days and was quite impressed with) in a Nikon mount (but non-AI). I plan to use it with an N90 & F100 (and maybe next year an FM3a). I understand that, of course, AF is not part of this lens, and have looked through some of the archives saying non-AI'd lenses are not compatible, but was curious as to why? Do I simply lose metering capability (having to stop down to meter) or are there other mechanical issues involved?
I sent a note to someone who was mentioned in the archives as doing AI conversions, just wondering if this is opening a can of worms, or if I should hold off till spring and maybe get a 105 micro-nikkor. The 90 was a sweet lens though, has anyone had good luck with converted non-AI lenses on newer AF bodies?
Thanks all for the input, great source of info this place!
#1. "RE: Non-AI compatibility question with AF bodies" | In response to Reply # 0mikerfns Registered since 01st Oct 2002Thu 07-Nov-02 01:42 AM
Non-AI lenses (whether Nikon or 3rd party) can seriously damage the AI meter coupling tab on AF and MF bodies that do not have a flip-up AI tab. This includes the FM3a, N90 and F100 (the F4 is the only AF body with a flip up tab).
If you get this particular lens Ai-converted you will eliminate the damage issue, and you can then use it without limitations on the FM3a. On the N90 and F100 you will lose matrix metering and be limited to aperture-priority and manual metering modes.
There is an excellent Nikon lens/body compatibility page on nikonlist.com at: http://www.nikonlist.com/lens.htm
Mike FA Nova Scotia FORMER Nikonian - It's been fun ... see ya ... I'm outta here!