Hi there... I'm quite new at scanning. I'm hoping that someone with more experience than I can offer advice on the best ways to scan 4x5 B&W negatives to allow me to print from 4x5 inch up to 11x14 inch. What would the optimum dpi for such sizes be? And once scanned, how should I save the files for best & sharpest printing on my Epson printer? I am using an Epson 4870 scanner and am using Epson Scan and PhotoShop Elements. Any tips/suggestions would be greatly appreciated. Thanks in advance for any help.