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T mount (M42x0.75) to M42x1
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PostPosted: Sat Apr 02, 2016 1:24 pm    Post subject: T mount (M42x0.75) to M42x1 Reply with quote

I just acquired a lens with a M42x0.75 T mount and would like to adapt it to use on Canon EF mount.

The easiest way would be to adapt it to Praktica M42 mount, so I can also use it on M42 film bodies.


Any advice where to look for a cheap (and good) adapter mount?


PostPosted: Sat Apr 02, 2016 2:02 pm    Post subject: Reply with quote

Get another lens in T mount with M42 adapter.


PostPosted: Sat Apr 02, 2016 2:22 pm    Post subject: Reply with quote

The 42x0.75 T or T2 thread mount has a longer rear flange distance than M42 (55mm rather than 45.46) & adapters are readily available (They are also common direct to EF mount).

There's a fairly good chance your favorite local camera shop will have them, as of course does e-bay, and any major used camera dealer. I think I've seen them listed as T2 much more often than T even though Tamron never used the T2 designation.
On e-bay you can also get M42-T2 stepping rings (in either direction) that don't allow for the change in rear flanges.

I don't think any of my T2 adapters have been over £5. I think EOS ones are a little rarer & work out more expensive (perhaps due to the chip).


PostPosted: Sat Apr 02, 2016 7:46 pm    Post subject: Reply with quote

Anyplace that sells cameras or telescopes should have T2 adapters for both M42 and EOS. I get mine from ebay sellers in China.

M42 and EOS are two of the easiest camera mounts to make with T2 -- I think it will be difficult to find a bad one! Wink

Very inexpensive, a dedicated T2-EOS adapter can be more stable than two adapters, especial with long heavy lenses.


PostPosted: Sat Apr 02, 2016 8:58 pm    Post subject: Reply with quote

visualopsins wrote:
Anyplace that sells cameras or telescopes should have T2 adapters for both M42 and EOS. I get mine from ebay sellers in China.

M42 and EOS are two of the easiest camera mounts to make with T2 -- I think it will be difficult to find a bad one! Wink

Very inexpensive, a dedicated T2-EOS adapter can be more stable than two adapters, especial with long heavy lenses.



Thanks for the responses.

A direct adapter to EOS would indeed be more stable.

I'll go look on ebay. Any direct reference for a good adapter is welcome of course.