QTR-Quadtone RIP

Now I understand! (I think [grin[) The "Linearize" data created by QTR-Linearize-Data for my paper describes what's needed to bring an image's tones to the straight line. So the correction itself (what's generated by QTR-Linearize-Data) is what QTR applies to an image.

When I use the new .quad file, which includes the linearize data, to print the target again and measure the values, running that set of points through QTR-Linearize-Data now shows as a straight line.

Dave

--- In QuadtoneRIP@yahoogroups.com, "dkosiur" <dkosiur@...> wrote:
>
> 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]
> >
>