Lightnings taking a ride

by ceinmart

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1
vote
3answers
842 views

What adapter to mount a screw thread lens on Nikon D90?

I have a Soligor 450 mm lens with a 40 mm dia camera body end thread connection. I would like to try adapting it to a D90 AF system. Are there adapter rings available out there for this purpose?
10
votes
1answer
576 views

How do I identify unknown thread mounts?

A local thrift store is selling a macro bellows with thread (screw) mounts. The mount is not identified. I have a cheap digital caliper. What are the likely mounts that it could be, and how can I ...