Hello Diego. "In any way normally I use the Icm file I create with argyll with colprof to make my softproof in photoshop, Is this procedure correct? Or not at all." I have always used this option on Photoshop to soft prooft all the ICM obtained with different software with apparently "visual" good results. I imagine that the obtained ICM with ArgyllCMS must not be different. But now I doubt of all. Then I am checking deeper all the steps and recheck the results. And I'm trying to measure all, instead of use my subjectivity. But my results after measuring each step, aren't good. If I softproof on PS with the "normal" method I can view the Lab values of the softproofed patches. Then what I do is to CONVERT the image to the printer profile. Here I can see the Lab values of the "softproof" that aren't the same Lab values on prints, using the same intent than the conversion process. If I calculate the softproof value for a patch using the next method: .\icclu -fb -ip MP_B01_A4_HPEverydayBrilloIIQ1Dif_NoVPre_396p64g3bArgyllv140_121011Opcio_qm_ ACPU.icm 28.87 14.81 -50.15 28.870000 14.810000 -50.150000 [Lab] -> Lut -> 0.358232 0.399245 0.879326 [RGB] .\icclu -ff -ir MP_B01_A4_HPEverydayBrilloIIQ1Dif_NoVPre_396p64g3bArgyllv140_121011Opcio_qm_ ACPU.icm 0.358232 0.399245 0.879326 0.358232 0.399245 0.879326 [RGB] -> Lut -> 39.085966 11.557139 -49.964686 [Lab] The Lab value is not the same that the printed patch and also different to the values obtained on the PS conversion. Could be the "softproof" term an approximation but not a exact method? If you want to check if your softproof method works, I think that a valid method must to be print the simulation of color checker card (I print it to a width of 9,5cm to accomodate 8 cards in an A4 sheet) that I attach you (you can download all from http://www.babelcolor.com/main_level/ColorChecker.htm#ColorChecker_images), and read the print patches and compare with the theorical values that you obtain with the softproof. If you check it, please comment your results then I can compare with my results too. Best Regards, Xavi. _____ De: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] En nombre de Diego Carra Enviado el: jueves, 18 de octubre de 2012 8:29 Para: Argyll list Asunto: [argyllcms] collInk for softproofing Hello recently our belowed Graeme Gill posted these command to user Xavi telling could be good for softproofing # Create proofing transform from output to AdobeRGB collink -v -ila -G -qh -cpp -dmt Argyllv140_396parxes48Gris3Blanc.icm AdobeRGB1998.icm Argyllv140_396parxes48Gris3Blanc_v.icm # Create proof image back in AdobeRGB space cctiff Argyllv140_396parxes48Gris3Blanc_v.icm skin_sky_p.jpg skin_sky_pv.jpg So I tried these command but probably unfotunately i miunderstand the real power of these command Now I tell you what I did. I though to use all the two command with an image of mine and using .icm file created for a backlit panel to arrive to a jpg file show me the softproof. But Unfortunately the jpg I arrive is really jellowish and tint uncolored. (unfortunately I can't show you becouse is publish protected copyrith) So I ask you the ICM profile I arrive with collink could be used in photoshoph to soft proof? In any way normally I use the Icm file I create with argyll with colprof to make my softproof in photoshop, Is this procedure correct? Or not at all. tahnking you for any help I send you my best regards. Faithfully Diego Carra
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