Vielen danke Klaus für diese measurements! Roger > -----Message d'origine----- > De : argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms- > bounce@xxxxxxxxxxxxx] De la part de Klaus Karcher > Envoyé : 10 janvier 2010 13:38 > À : argyllcms@xxxxxxxxxxxxx > Objet : [argyllcms] Re: Kodak Graycard spectral file > > Pascal de Bruijn wrote: > > On Sun, Jan 10, 2010 at 3:17 PM, Pascal de Bruijn > <pmjdebruijn@xxxxxxxxx> wrote: > >> Hi, > >> > >> Does anybody have a spectral (.sp) file of a Kodak Graycard? > > > > I'd like to see it for comparison purposes... I just spotread two > > cheaper "graycards" I had lying about... > > > > Regards, > > Pascal de Bruijn > > Here is a plot containing your graycards and some other gray reference > data I have handy: a really old Graycard from Kodak (if I remember > correctly) and a DGC-100 Graycard from Robin Myers (both measured with > my eye-one pro and argyll 1.1 RC4 in highres mode), one patch of a > Kodak/Tiffen Q13 Grayscale (averaged Spectrolino measurements), a > Neutral patch from ColorChecker SG (Xrite PM Reference file) and a > Neutral Munsell 4.75 Chip (measured with a Perkin-Elmer Lambda 18 > (SPEX) with 1nm resolution). > > Needles to say that the micnova graycard is crap while the dealextreme- > graycard looks pretty good. > > I guess one should take the eye-one / argyll 1.1 RC4 highres readings > for λ > 740 with a pinch of salt: the steep fall-off at the red end of > the spectrum seems not plausible to me. > > Klaus