According to Jon’s blog on scanning workflow (http://www.piezography.com/PiezoPress/blog/piezography-technical/scanning-workflow/), we are to scan from dmin 255 to 0 dmax.
Firstly, I’m using a V370, but it is sophisticated enough to allow me to set these points. However, what is not explained in Jon’s workflow is the use of both input and output levels. Epson doesn’t really explain what is going on very well either, and knowing what Epson and computer techs actually do, can anyone really know what these are doing? So, should I be setting both input and output levels to 0/255, or just the output to the 0/255 and set the input according to what I see on the histogram?