Ektachrome 100D is processed in Standard E6 chemicals and not ECN2 furthermore Ektachrome 100D does not have a Remjet backing so it can be be processed at home in E6. The perforation is different to still film B&H perforation (cine film) vs KS (Kodak perforation) (still film and Cine print film as well as Russian MP cameras) but since normal still cameras don't have a registration pin you shouldn't have any problems using it in your still camera

Good Luck