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Old 01-02-2010, 07:09 PM
Dazzled by the Cosmos.

Dennis is offline
Join Date: May 2005
Location: Brisbane
Posts: 10,918
I think that the generic T-Ring thread is M42x0.75mm pitch whereas the Pentax M42 thread was M42x1.0mm pitch?

Then there is the Vixen 43mm thread which is different to the Takahashi 43mm thread – so many to choose from! LOL!


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