I've been "scanning" using a Rodenstock APO-Repro lens optimized for 1:1 and a slide copying system using a dedicated film copying system for years. There is just no comparison between it and conventional scanning. Superior in every way, except dust removal, but the speed and better quality of final copy more than compensates. Just make sure to remove dust before copying. Film scanning using conventional scanners was, for me, about the best way to destroy one's interest in photography.