[KHS]

For those using Windows 10, may I recommend the free and very easy-to-use Paint.NET? I have been scanning a variety of old fakebook pages and I've found (for reasons I don't have enough optics background to understand) that for some of my scans with grayish corners (presumably where ambient light slips in when I have chosen not to break the book's bindings) using the simple Brightness/Contrast control in Paint.NET, and LOWERING the brightness while RAISING the contrast eliminates the grayish corners and actually SEEMS to make the page look brighter. FWIW.