Note: these are not accurately gray (a=0, b=0) but the diffe- rences for a,b are not relevant in a photo. I also wrote to Taz, and asked about it, but I"ve not heard back yet.īelow are the CIELab values for the bottom line grayscale in MY ACTUAL reference file. But I searched high and low in Google, but couldn’t find it. Taz Tally did refer to his 10 step target. I haev a goodly assortment of "test" image files, but what I’d like to get is a 10 step grayscale with RGB values defined in advance by the supplier. Then if I printed that out, I’d have the printer profile to contend with.Įven though all my "stuff" is profiled, I’d still be off in what I’m looking for. Then of course, I’d have the scanner profile to contend with. I looked over the data file for the IT-8 target I have – remember this is a paper target, not a film target – and I did see the LAB data there.īut the problem is that I can’t easily identify which of the data are for the grayscale, and, even if I could, how would I take that data, and convert it to RGB? Conversions are easy for an image opened in Photoshop, but the only way I can get such an image is to scan the IT-8 target.
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