Hi!
I'm a little bit late for this thread, but maybe my info would be useful anyway...
I can confirm this is Tair 3, probably version from "photosniper" setup. It has M42 mount (M42x1) and can be adapted for MFT.
Note 2 things:
- Don't mix M42 mount with T-Mount which is M42x0.75 thread. Not only pitch of the thread is different (enough to block screwing fully in lens mount into adater or body), but also register distance and subsequently adapter length is different very significantly (very roughly 1 cm or so, as I remember). I have both adapters, M42-m4/3 and T-m4/3
- On some cases there's some problem with adapter length and infinity focus. Here's the advantage of thread mount adapters: You may fix the problem by simple machining the adapter; I had to shorten mine about 0.8 mm or so to achive infinity with an adapted 300 mm M42 telephoto lens (not Tair3).
Regards,
-J.