I want to make dups of my 6x7 slides, but can't afford the Pentax 67 bellows and duper. I am considering using Fuji or Kodak 4x5 film and using my 50mm Componon-s lens to project, them do the E-6 in Jobo drums. Anyone ever try this??? Is there a way to go directly to 120 roll film other than the Pentax system???