I have a Mamiya 645 Pro TL. I see that it basically has a 3-wire remote socket, although it requires an adapter. But I found the pinout somewhere and it seems to work as expected... short one pin and you get a half-press, short the other and it releases the shutter.
I know I can twin Canon SLR's by simply connecting the remote sockets. Has anybody tried this with late-model Mamiyas?
Suppose I could use a dual cable release, but much prefer wired.