[argyllcms] Re: Paper White

Amin Gharehchaie wrote:


I see that many manufacturers of paper gives CIE values of the paper whiteness.



How is this measured?


See <http://www.axiphos.com/BrightnessReview.pdf> for a good
explanation of this.


Is it possible to measure in Spotread somehow?


No, I haven't put specialized measurements such as density and
whiteness in there. Whiteness uses a particular narrow band
filter. If you are using the paper for proofing purposes,
then I think that CIE whiteness is not very useful, and
that looking at spectral shape, delta E and level of FWA
is probably a better way to evaluate matches between papers.

Graeme Gill.

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