What is scanning? Anyway, the best transparency films are already gone, and the little that's left could go next. The last time I was at Oneonta Gorge I shot 8x10 Astia 100F, which was just about ideal for the contrast range, and has a dimensionally stable polyester base much better suited for mask registration purposes than Provia, which is on unstable acetate. More accurate color too. But with the demise of Cibachrome, I made a contact interneg of one of those shots so I could print it RA4 paper. It's windy in that narrow gorge lots of the time, so a slightly rainy day helps; it also helps soften the light if you are shooting chromes. Nowadays I'd select Ektar color neg, properly filtered; and yes, that KR 1.5 would be a good choice for it too.