On 12-06-01 1:33 AM, "Ernst Dinkla" <e.dinkla@...> wrote: > There is another way to get the Lab b on a zigzag course. Measure a > target with heavy bronzing and the 45/0 degree reflection optics in a > spectrometer are affected by the bronzing layers. The measured color is > not 1:1 to what the eye sees in color of the bronzing but that is > understandable given the spectrocam's light source and sensor as another > light + another observer. In practice one would not select a B&W > paper/ink combination that creates that much bronzing but in color > printing it may be less obvious and play a role when colors are off > after profiling. Grey range in color prints for example. I will put some > QTR linearisation plots on my site to show the difference between a > target with and without bronzing. Not that's very interesting, and something well worth keeping in mind. Would L* values suffer in this circumstance? Terry.
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Re: [Digital BW] Re: Invalid linearize curve -- not constantly increasing
2012-06-01 by Terry Ritz
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