Kristian Jörg wrote: > Hmm, one of their selling points (CP) is that the meter has very stable > readings, even in very low > light. Maybe they are reading several measurements and getting an average? Longer readings have less variation due to refresh, but it is only a linear improvement with integration time. If the reading synchronises, you don't have this trade-off. Beware that claims of of improved stability may be assuming non-refresh conditions (LCD). > Do you provide standard calibration files with the i1d3 driver for Argyll? I'm not sure what you mean by this. Only one calibration comes with Argyll, and that is for a CRT like display. You can use the i1d3ccss to access the display calibrations that come with your instrument. <http://www.argyllcms.com/doc/i1d3ccss.html> Graeme Gill.