I can tell you as someone who has sent digital files to Dwayne's Photo for printing to slide film, that I was hard pressed to tell that they were digital printed to film than shot on film originally when I projected them at reasonable home viewing sizes. I suppose I could've seen the difference had I projected on the side of the garage and pixel peeped. A couple of the files were scans that weren't so great, but here again, Garbage In, Garbage Out. When the source material was good, the end result was good as well.