I've struggled to get good black and white scans from my 9950F (using the supplied software). This morning, I finally took some time to experiment with assorted settings and stumbled into a simple combination that seems to work consistently. I found that setting the scan to color negative source, output color mode gray scale, auto tone off, unsharp mask on, backlight correction low, calibrate to set automatic on each scan, I finally was getting predictable and usable scans. I have previously been getting scans that were very muddy and that required a great deal of manipulation. This combination gave me a good, easy place to start, good shadow detail and required just a bit of tweaking and sharpening to give good print output.