Thanks for your answers.
Dan I have a question. I'm no expert in this so there's a lot of things I don't understand. First, I want to use this lens with my toyo 8x10 camera. I would like to use movements, If I put a shutter behind the lens, that is smaller than the lenses opening/diamter of 11 cm, then wont I loose it's f3,6 opening?
And even if I dont, wont I limit the movements I'm able to make, before the lens starts to vignette?
Also I still don't get how I can mount a mutilated speed graphic shutter in front of the lens. Do you have a picture of such an operation? That would be much apreciated.