I was wondering a few things about customizing lenses.
Can you take a fixed aperture lens and install an aperture in it? (I realize this may require having a custom lens barrel designed and made.)
Can you install a leaf shutter into a lens that was not originally designed for a leaf shutter? If so, would it be difficult to install a sync onto the lens mount so the camera body registers the exposure (assuming the camera body was designed to use lenses with leaf shutters)?