> > The stepper motor can actually move at 9600 dpi, which > > is evenly divisible by both 4800 and 3200. > > Does this mean they are doing something more than what is usually done for > interpolation?
No matter how fine the stepper motor is, the CCD can only "see" at the resolution of the field-of-view of the CCD. Stepping finer doesn't necessarily give you more usable data.
