Op 13-1-2011 14:14, Elena [service address] schreef:
The real matter also is that is not easy to make precise and predictable measurements in those dark areas. Measurements tend to be noisy due to instrument, to printing process and paper inconsistencies. For a good job, one would better create a second additional target with many many dark patches, possibly even duplicating ones, so that colprof can average them, all randomly spreaded on the chart.
Averaging is one thing.The HP Z printer models take longer readings of dark patches than of lighter ones.
With the Spectrocam in stripmode mutiple flash readings of longer dark patches was something I experimented with. In that case for QTR B&W profile creation. It was easier to use 4 targets and the averaging of QTR's profile creator.
-- Met vriendelijke groeten, Ernst New: Spectral plots of +220 inkjet papers: http://www.pigment-print.com/spectralplots/spectrumviz_1.htm | Dinkla Grafische Techniek | | www.pigment-print.com | | ( unvollendet ) |
