Hi Nikolay. Thank you for doing a ti3 file for me to try to check that everything is correct on my case. I have resized a little your tiff file because I have a colormunki and the size of the patches were too small. The patch 29,14,50 [Lab] is out of gamut but the original patch that I print is diferent. The original was the blue color patch of the simulation color checker chart: 29,14,-50 [Lab] I haven't modified the colors of your file. Only the size to be read with CM. I have printed yout test4.tif using the ACPU utility from Adobe and exactly the same media settings (I have recorded them as a preset). The test target was also printed with ACPU. I use ACPU because after some tests, seems that ACPU prints different than the PS CS4 disabling color management. I have let dry for about 8 hours and I have read it using the same spectro that was used for reading the test patches, and on strip mode. The results of the verify.exe command are: .\..\verify.exe -v -D test4_grans_ACPU_2.ti3 Test4_fakeread. ti3 No of test patches = 4 1: 55.685061 1.050502 1.474861 <=> 50.000000 -0.000200 -0.000300 de 5.966573 2: 50.098214 15.311162 47.347346 <=> 46.397000 13.620000 42.779000 de 6.117908 3: 83.059447 2.768188 76.146682 <=> 82.000000 4.000400 80.000000 de 4.181966 4: 43.876601 14.647638 20.301919 <=> 38.000000 14.000000 14.000000 de 8.641068 No of test patches in worst 10% are = 0 No of test patches in best 90% are = 4 Verify results: Total errors: peak = 8.641068, avg = 6.226878 Worst 10% errors: peak = 0.000000, avg = 0.000000 Best 90% errors: peak = 8.641068, avg = 6.226878 Are the expected results? If not, when do you think that can be the issue? I attach the used ti3 file. Thank you for your appreciate help. Best Regards, Xavi. _____ De: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] En nombre de Nikolay Pokhilchenko Enviado el: miércoles, 24 de octubre de 2012 8:39 Para: argyllcms@xxxxxxxxxxxxx Asunto: [argyllcms] Re: ArgyllCMS: shadow details and blue color issues. What I'm doing incorrectly? Wed, 24 Oct 2012 02:06:02 +0200 "Xavi" wrote: Then, on Photoshop I create 4 rectangles, that I fill, one by one, with the RGB values obtained. I save them on Tiff format and I print the file with the same program and the same printing options that I have used to print the test chart. Hello, Xavi! I think You can introduce the error at this stage because there may be a difference between AgyllCMS chart image generation and the Photoshop. Try to print the target in attached Test4.zip the same way as You have printed the targets for MP_B01_396p64g3bArgyllv140_121011.ti3. Then read the chart the same way as You've read MP_B01_396p64g3bArgyllv140_121011.ti3 (I'd recommend the reading in the strip mode, not patch-by-patch). After reading, compare the targets: verify.exe -v Test4.ti3 Test4_fakeread.ti3 And You'll see actual workflow errors. By the way, the patch 29.000000 14.000000 50.000000 [Lab] is out-of-gamut for Your printer. You can't check the tolerance by out-of-gamut colors. So, it's Lab value was replaced by the nearest possible (by xicclu -fif then -ff): 46.397 13.620 42.779