Hello again I guess this is another dumb question. When I use printtarg with -ii1 I typically get this output. This is direct from the Scenarios.html [ltg@hjemme r2400]$ argyll/bin/printtarg -v -ii1 -pA4 PrinterA Paper chosen is A4 [210.0 x 297.0 mm] Patches = 1053 Test patches per row = 21 Rows per page = 22, patches per page = 462 Rows in last strip = 7, patches in last row = 3 Total pages needed = 3 Worst case delta E = 63.501614 Optimising layout for strip reader: 100% After optimisation, worst delta E = 80.126192 [ltg@hjemme r2400]$ Can this be correct? When I try to other instruments with the -i option I don't get the "worst case delta E" line at all, but more like this: [ltg@hjemme r2400]$ argyll/bin/printtarg -v -i41 -pA4 PrinterA Paper chosen is A4 [210.0 x 297.0 mm] Patches = 1053 Test patches per row = 25 Strips per page = 2, rows per partial strip = 7 Rows in last strip = 5, patches in last row = 3 Total pages needed = 3 Worst case density contrast = 0.701037 Optimising layout for strip reader: 100% After optimisation, density contrast = 0.814464 [ltg@hjemme r2400]$ Lars Tore Gustavsen