Digital BW, The Print

One other thing worth mentioning on this subject is an issue pointed out by Roy.  Epson printers seem to take awhile to get going and so he recommends measuring 21 x 4 step wedge. QTR Create ICC averages each of the 4 observations to produce 21 sample steps.  The files for Colorport/i1Profiler I posted the other day have 21x4 steps as well as a little warm up strip for the printer.