Leica to FSU instead?

[farlymac]

And now, back to our regularly scheduled thread...

The reason I asked the original question was that I had the oportunity to purchase a couple of bargain Leica items, one being a 90mm f4 Elmar (early '50s version). As it turns out, the rangefinder cam is very skinny, and will slip behind the cam follower on a Zorki 1D while mounting it. I have read of some folks adjusting the cam follower so that it just clears the lens mount in order to alleviate this. I think I'll just leave well enough alone, and keep the Zorki all FSU.

PF

 

[Sonnar Brian]

It is my speculation that the cam follower in an FSU camera is designed to maintain coupling as a lens is focused closer than 0.9m. That's about where a Leica style cam follower hits the threads of the lens and loses RF coupling. The finger style design allows it to go slightly deeper. Some of the J-8's (double-helical design) focus closer than 0.9m. My Zorki 3M used with the Nikkor 5cm F2 (thick cam, and close-focus) maintains coupling to closer distances than a Leica.