Nikon and Polaroid market 4x5 film scanners. Expect to pay between 7500 and 9000 for each. Depending upon your needs, you may be able to use a transparency adaptor with a flatbed, maybe the flatbed you already own. If not Umax Powerlook III is worth investigation. Ditto for the Agfa and Microtek dual units: you get a flatbed and a separate "drawer" into which you can insert transparencies/negatives up to 4x5 or 8x10, depending upon the unit. The cost of this dual units is much less--650-1500 depending upon unit. The Nikon/Polaroid are first class scanners, but again depending upon your use and needs you may find it suitable to pass over 2700+dpi and the cost it entails. Bob Moulton