Hi all, Am a newby here and can't seem to find the answer to my question. Please forgive me if it has been asked before and I am just too boneheaded to find the thread. I am looking to buy a 35mm film scanner. Have about half settled on the Minolta Scan Dual IV, but I have a question first. What the heck is DPI and what practical effect would it have for me? I mean, $260 for this one at 3200 dpi vs about $1000 for a Canon at 4000 dpi. Any help and advice is much appreciated.