Leitz 21 SA on R4A/M ok?

[summilux]

can I mount the 21/4 or 21/3.4 on Bessa R4M/A and get meter to work? Since the old contax biogon 21/4.5 from the 50s can be used on R2C with meter, I wonder...

 

[deepwhite]

I can mount the SA21/3.4 on Epson R-D1s, but no meter on either.

Correction: CANNOT mount the SA21/3.4 on the R2A. Sorry for the previous error.