http://www.nikonchat.com/nikkor-film-lenses/

How do i mount a nikon mirror lens?
I have a Nikon N2000 film SLR and a spiratone 300 mm. The mirror lens does not have a bayonet mount like my other nikkor lenses, and it has only a small circle ring with glass. How do I mount this to the camera?
thanks
If I recall correctly I think the Spiratone uses an AdaptAll or a T-Mount. Sounds like you may not have everything you need to mount it.
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