I post this here as I shoot primarily large format and do scans on an epson 3200. My question is when I have scans done on drum scanners for 8X10 or 4X5 they are usually done at 300 meg. When I do them on the epson I have a choice of 6400 or 3200 or 1600. The file size is enormous at 6400 and over 500 meg at 3200 on 4X5 and more manageable at 1600. I do not see a difference between 1600 and the others besides file size. However the drum scans are so much better. I would like to know if there is some type of primer on all this information that I can read and understand to explain all this. By the way I usually print out what I refer to as proof prints on the epson 2200 and if the image is worthy of a print then send it out for drum scanning and professional printing.