Leica:M7/M8/M8.2/M9/M9-P/M10/M-E/M-P/M-A/M-Monochrom/M Type 240
Canon:F-1, New F-1, AE-1 (FD mount)
Nikon:Df/F3/M2
* The soft release button also fits other cameras with a shutter release socket which is compatible with a mechanical shutter release cable.