Viewing an exhaustively NIK sharpened 13X19 Canon Pro-10 "B&W" inkjet print on Canon Pro Premium Matte PM-101paper from an APS-C file. . Subject is a group of corrugated steel farm barns , their hard edges up against white and a variety of grey skies. I played extensively with full range of NIK's possibilities including Focus, Contrast, Degree, viewing distance (selected 1.2-2.5 meters) and printer factors (I selected 1440X1440). I decided to limit adjustments to limit white outline sharpening artifact. The artifact I've settled on is soft...around 1/2 mm...can be readily seen in some areas with 5X PEAK LUPE (loupe). A color version has no sharpening artifact presumably because of all the color dots...this "B&W" print is actually NIK's lowest "coffee tone" .... looks like the old Agfa Portriga Rapid untoned. Thoughts? Perhaps a full frame (rather than APS) file would solve this, as might a Nikon scan from various 35mm films/chemicals.