I'm thinking of DIY DOF adapter for my HV20. I have bunch of older MF canon EF and also old Hassy 80, 150 and SWC. I'm thinking of modifying a trashed 70mm Hassy mag with vibrating GG and hole for HV20 lens. Basicly use old Hassy modular cam in front of my HDVcam. Good idea or should I better...