J8 50/2 m39, NOT coupled?

[mike goldberg]

Do I assume correctly that the excellent Jupiter 8
in m39 screw mount version+M adapter... is NOT
coupled to a Leica or Bessa M's RF mechanism?
Thanks, mike

[rxmd]

It should be. The rangefinder mechanism is basically the same for M39 and M-mount cameras, just the exterior of the mount is different.

[santino]

it is coupled. I took a lot shots with it since I didn't buy my M6 with any M lens.

[mike goldberg]

Thanks so much, guys. Live & Learn ;-)
Appreciating the quality of my Kiev's J8M 53/2,
I want to try a J8 50/2+M-mount on the Leica M2.
Cheers, mike