I am trying to determine the fastest and most econocmical method to duplicate 6x 7 color chromes? Is there a MF lens and back set-up which is specifically desig ned for this? I have considered a film recorder, however they are very expensiv e, $30k, and quite slow vs. firing a shutter. (10 minutes per expsoure) I also have considered making a digital file then going to a film recorder and print an 8x10 piece of film...then contact dupe them to 8x10, then cut them up. I need to have a set up that will allow fast duping of 100 of each chrome. Thank you.