QTR-Quadtone RIP

Also I'd use the 51 step rather than 21.
21 is too small for good shadow seperation.

Mike


On 21/11/2007, Michael King <drmrking@...> wrote:
>
> I would try textured fine art paper
>
> On 20/11/2007, Guy Brown <guyxbrown@... > wrote:
> >
> >   Mike,
> >
> > > So question is what Epson paper setting are you using for Photo Rag?
> > > I think Ultrasmooth puts down the most ink, VFA next and Textured Fine
> > > Art the least.
> >
> > I was using VFA. So I'll try the ultrasmooth setting - thanks.
> >
> > > You can try the different paper settings on your 2400 to see which
> > gives you
> > > the best black without laying down too much ink (blocking the
> > shadows). Do
> > > this by printing out the Create ICC step wedge, measure it and then
> > before
> > > you use Create ICC, plot the values on a graph and see if the shadows
> > are
> > > closing up like the end of a hockey stick or not. If they are then you
> > are
> > > putting down too much ink, try a different paper choice in the ABW
> > driver.
> >
> > Actually I saw this with the VFA setting - see figures below:
> >
> > Step Dens Lab A B
> > 0.00 0.036 96.80 0.79 -1.23 - b | a L +
> > 5.00 0.074 93.58 0.88 -1.05 - b | a L +
> > 10.00 0.121 89.68 0.90 -0.68 - b | a L +
> > 15.00 0.168 85.95 0.86 -0.40 - b | a L +
> > 20.00 0.225 81.62 0.85 -0.24 - b| a L +
> > 25.00 0.281 77.52 0.79 -0.06 - b| a L +
> > 30.00 0.339 73.44 0.73 0.04 - b a L +
> > 35.00 0.405 69.00 0.63 0.17 - b a L +
> > 40.00 0.474 64.63 0.51 0.24 - b a L +
> > 45.00 0.543 60.49 0.43 0.43 - |b L +
> > 50.00 0.618 56.19 0.18 0.83 - a b +
> > 55.00 0.700 51.79 - 0.11 1.04 - a|L b +
> > 60.00 0.790 47.24 0.02 0.81 - L a b +
> > 65.00 0.889 42.63 -0.06 0.40 - L a|b +
> > 70.00 0.969 39.13 -0.04 0.19 - L ab +
> > 75.00 1.086 34.39 -0.05 0.11 - L ab +
> > 80.00 1.248 28.50 -0.07 0.01 - L ab +
> > 85.00 1.403 23.53 0.03 0.02 - L b +
> > 90.00 1.530 19.84 0.17 0.26 - L ab +
> > 95.00 1.607 17.80 0.43 0.96 - L |a b +
> > 100.00 1.619 17.47 0.76 2.11 - L | a b +
> >
> > As you say, the values bunch up in the shadows giving a "hockey stick"
> > curve. I guess that
> > I'll have to experiment with some different paper settings.
> >
> > > Also I would use the normal setting for ABW not the darker setting.
> > The both
> > > have the same dmax, but normal gives Create ICC more headroom to
> > manipulate
> > > the shadows and I find a I get better shadows with normal.
> >
> > Thanks - I'm doing that already as it happens.
> >
> > Cheers
> >
> > Guy
> >
> > 
> >
>
>


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