Quote Originally Posted by barryjyoung
weird camera threads? Um, threads are threads, Either metric or inch. To the best of my limited knowledge cameras either use module threads for metric or standard 60 degree sharp V inch pattern threads...
Not quite... There have been many "weird threads" used through the years, like the 40 degree threads on the big Compound shutters. They're often quoted as 29 tpi, but that's not absolutely correct. See "Bottom feeder's guide to German lenses" in the articles for specifications