Hi everyone, I am trying to find a generic approach for reading the 'lumi' tag accurately, using Little CMS 2.7. I use ICC profiles that are generated with XRite i1 display pro, and it seems that the X & Z values of the CIEXYZ 'lumi' value are not 0 (making the profile wrong according to the ICC spec). I am under the impression that little CMS applies a kind of correction whenever this kind of 'lumi' tag is detected (diving X, Y, and Z by 100.0 ? ).However, the Y value that is contained in the tag is correct (so the aforementioned correction makes it wrong). Is there a generic way to face this issue ? I may have to read the raw tag and interpret its data myself, but wouldn't that mess with the profile handle (I observed that closing/reopening the profile in the code actually made a difference) ? Can I use a call to cmsReadRawTag while the rest of my code use the traditional cmsReadTag ? Thanking you in advance, Vincent Ponchaut
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