Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, CDTobie@... wrote:
>
> 
> In a message dated 6/7/07 3:14:56 AM, michele@... writes:
> 
> 
> > No idea why this red bias. The QTR target is a Greyscale 8 bit file,
> > if you have QTR this file is under
> > 
> > Programm Files/QuadToneRIP/Eye-One/Step-21-gray.tif
> > 
> > I just opened this file, PS warmed it was in a different color space,
> > I left it on its color space (don't color manage). Then Print With
> > Preview, picked the PFP profile I made, I selected Relative
> > Colorimetric and Black Point Compensation. In the printer driver I
> > pick Premium Glossy Photo Pager and 2880dpi (that was the setting I
> > used to print PFP targets).
> > 
> Well, for starters we recommend you try Saturation intent for your B&W 
> printing, and always recommend BPC be turned off with PrintFIX PRO
profiles: our 
> profiles are designed for use without BPC, since its not available
in all 
> applications.
> > 
> > Now, how can I neutralize this PFP profile?
> > 
> Try printing at the settings above, and see if that changes your color 
> balance... the other fix, of course, is to move the red to green
color adjustment 
> slider a couple of points away from red, but that should not
actually be 
> necessary.
> 
> >  And, at the same time, how
> > can I achieve deeper blacks (at least comparable to ones obtained with
> > the ABW printing mode)?
> > 
> > My guess is that its the Black Point Compensation thats the
culprit here. 
> Even though the color mode is not always capable of as dense a black
as AWB mode 
> (it varies with the paper and the media setting) there shouldn't be
a huge 
> difference. So try unchecking BPC, and then (if you are willing to
start from 
> scratch again) go to PFP's Media Setting Check screen, and see if
there is any 
> media setting that will offer a deeper black. If so, reprint your
targets at 
> that setting, and see what that offers.
> 
> But even without reprofiling, I suspect you will get deeper blacks
and more 
> neutral grays just by turning BPC off, and using the Saturation
intent. One or 
> two quick slider adjustments would be the most you'd need, even if
that didn't 
> zero out your neutrality. One more tip:   if you tweak your
neutrality, try 
> to err to the red side of neutral. Fractional red values are quite
acceptable, 
> but green values, even fractional ones, are unpleasant.
> 
> C. David Tobie
> Product Technology Manager
> ColorVision Business Unit
> Datacolor Inc.
> CDTobie@...
> www.colorvision.com
> 
> 
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> 
> 
> [Non-text portions of this message have been removed]
>

Here you go the best I achieved trying tuning the varios settings in
PFP (pushed greens to +3):

L	a	b
97.49	1.56	-0.47
93.81	1.3	-0.01
90.24	1.4	-0.4
86.58	1.38	0.39
82.88	1.31	-0.29
79.4	1.12	-0.52
75.73	0.27	-0.62
71.43	1.09	-0.49
67.53	1.1	-0.1
63.86	0.63	0.03
59.51	0.71	0.7
54.54	1.01	0.38
49.58	0.53	-0.01
44.29	0.09	0.36
39.37	0.24	0.3
34.02	0.08	1.11
27.66	-0.49	1.61
20.79	-0.56	1.5
14.44	-0.64	1.28
8.13	-0.5	0.84
7.26	0.3	1.83


Can this be considered a good one? Blacks are still not as deep as I
wish ...