I haven't yet transferred the Linearized data to my curve because I thought linearized meant "linear", as in a straight line. I will do that and print the target again. Thanks --- In QuadtoneRIP@yahoogroups.com, Michael King <drmrking@...> wrote: > > >>Not sure how far you've gone but just to be sure, have you added the > >>Linearize data generated to the qidf file and regenerated the quad file? > > and then print the target with that new .quad file that includes > linearization data? > > Also you need to be 100% sure that you are printing without icc profile to > create profile. Easy to do in QTR on Windows (its a standalone app) but on > the Mac its not a standalone app so not sure how you print without profile. > > Then when you print the target you need to again to consider whether you are > printing with or without icc profile. A target with gamma 2.2 profile will > give you a gamma 2.2 curve :) > > Mike > > On 15 March 2011 18:52, Mike Finley <mike@...> wrote: > > > > > > > > > > > > > On 15/03/2011 18:04, dkosiur wrote: > > > I've been trying to create a set of curves for a new paper on my Epson > > > 3880, but the initial curve never becomes a straight line after > > > linearization. Isn't it supposed to become a straight line? > > > > > > I read all the docs and did the following: printed the ink separation > > > chart and calculated my ink limits for K, LK, and LLK inks. (The numbers > > > were K: 55%, LK: 46%, LLK: 14%.) After inserting those numbers into my > > > new curve file and installing the file, I printed the > > > Step-21x4-random.tif file and used my Datacolor 1005 spectrophotometer > > > and Spyder3Print software on a Mac to read the swatches. After running > > > the resulting file through QTR-Linearize-Data, the result came out as a > > > curve. > > > > > > ... > > > > > > > > LINEARIZE="96.085 93.5125 91.435 89.3875 86.9875 84.455 81.6075 77.57 > > > 74.915 71.8225 68.355 64.405 60.4925 56.3575 52.4375 47.6275 43.1525 > > > 35.9175 27.3475 16.14 6.5975" > > > > > > Is this the way it should be? Did I do something wrong? Am I > > > mis-interrpeting the word "linearize" here? > > > > > > Any help/explanation would be greatly appreciated. > > > > > > Many thanks, > > > Dave > > > > > > > > > > -- > > mike finley photography > > fine art photography and website construction > > http://mypicks.efikim.co.uk > > http://www.mikefinley.co.uk > > http://www.roguegenecollective.com/Mike_Finley.html > > http://www.efikim.co.uk > > > > > > > > > [Non-text portions of this message have been removed] >
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Re: Why can't I get a linear curve?
2011-03-15 by dkosiur
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