I have an Epson Expression 1600 firewire model. It does a good job on 4 X 5, but with some issues:

1. Film flatness is a problem--not a big one, but significant. However, I think in theory that it would be possible to wet mount the 4 X 5 to the glass with KAMI and then manually focus the scanner. I haven't tried this. 2. Optical resolution is low relative to specs; I couldn't see any improvement after 1200 DPI, even on chromes with superior detail. 3. color accuracy is quite good 4. don't count on getting good results on chromes with large areas of deep shadows. You will get noise--reasonable for the price of the scanner, but a big annoyance if the area is of any size.