I have a great shape portrait petzval lens that has a studio shutter and working aperture. However, it's missing the small metal block that screws to the lens barrel that has the plunger to operate the aperture lever. Anyone have a non working lens or studio shutter with one of these on it?
Eddie, correct, it's a small metal block were the release screws into. The block has 2 small screws that should attach it to the back of the shutter ring. I think (not 100% on that though) that the cable release block is a mechanical version, not like the pneumatic one on my 12" Velogstigmat Series II studio shutter... I tried fitting the pneumatic actuator onto the Series A lens, but it was the wrong size :-(