I've got a 6" F4 petzval that I recently acquired. I would like to get it in a shutter and I do have an Ilex #4 that was recently CLA'd and is in good shape. I was thinking about front mounting the shutter. Front of shutter is 52mm and the ID of the petzval front element is 49mm. I figured I would slap 2 filter adapter rings together which would allow me to attach the shuter to the front of the lens whenever I wanted to. While I am sure the shutter thread is 52mm, the 52mm adapter ring I have is not deep enough to catch the threads but I can work that out. The shutter is f9. I've eyeballed the iris opening to the lens and the iris looks like it is wider by a mm or 2.
This is certainly not the right way to do this but until I get the $$ to have SKG do it right, or lens2shutter, do you see anything wrong with this? I won;t be using this setup frequently. Just now and then. I'm not a soft focus guy - yet.