Digital BW, The Print

Tobie, I made a profile reading the 255 patches + the extended grays
on Hahnemuhle FineArt Pearl. I then opened the 21steps wedge I found
in the QTR installation, printed using the PFP profile and read the
patches; here you go my readings:

96.95	1.46	-0.67
93.43	1.32	-0.45
89.92	1.51	-1.06
86.71	1.62	0.09
82.82	1.89	-0.56
79.42	1.79	-0.89
75.89	1.59	-0.62
71.71	2.01	-0.60
67.54	1.68	-0.85
63.87	1.59	-0.65
59.69	1.66	0.08
55.43	1.85	-0.27
50.76	1.73	-1.00
46.06	2.18	-0.70
41.10	2.30	-1.37
36.84	1.59	-0.44
31.01	0.82	-0.29
25.51	0.89	-0.19
19.37	0.14	-0.22
13.19	0.53	-0.39
10.11	0.84	-0.23

I also printed the same 21step wedge on the same sheet of paper using
the ABW mode of my 3800 selecting Color Tone = Neutral and Tone =
Darker in the printer driver (I also disabled color management in PS).
Here you go my readings:

97.15	1.50	-0.65
93.29	1.68	-0.30
88.66	1.79	-0.29
84.00	1.63	-0.96
79.24	1.14	-1.27
74.56	1.17	-1.27
70.01	1.04	-1.30
65.44	0.89	-1.07
60.79	0.78	-1.22
56.58	0.68	-1.43
52.18	0.56	-1.37
47.61	0.50	-1.18
42.81	0.44	-0.80
38.06	0.24	-0.92
33.42	0.03	-0.44
28.45	0.04	-0.86
23.83	0.12	-0.74
19.66	0.05	-0.46
15.66	-0.03	-0.33
11.83	0.23	-0.02
7.42	-0.24	-0.90

Now, between the two, which one should be considerd more neutral? And
which one has deeper blacks?


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, CDTobie@... wrote:
>
> 
> In a message dated 6/6/07 4:32:26 AM, michele@... writes:
> 
> 
> > Hi David, I am experiencing the same issues since I recently get a
> > 3800. After profiling all my papers with PFP I made some comparisons
> > and although prints made with PFP profiles (with extended grays target
> > embedded) looks nice I feel more comfortable with the ABW workflow.
> > 
> > The only thing I missed with ABW is the ability to soft proofing and
> > profiling different papers. At the moment I discovered a way to
> > profile the ABW mode here:
> > 
> > http://www.outbackphoto.com/printinginsights/pi045/essay.html
> > 
> > and just started some testing.
> > 
> > Does anyone tried to build his own profil to be used in the ABW mode?
> > 
> 
> Lets see, where do I begin? Roy Harrington, whose software this is
about, it 
> on this list, so he can respond directly. I have a few comments. One
is that 
> this piece says you need an EyeOne to profile AWB mode. Not true,
you can to it 
> much more affordably with PrintFIX PRO to read the patches and
produce the 
> measurement sets for QTR. Unfortunately Roy still has his
spectro-basesd 
> measurement materials in a folder labeled EyeOne in QTR, and his
directions written 
> for an EyeOne, even though we've gone out of our way to list export
modes 
> specifically for CreateICC and QTR in our software. Oh well.
> 
> Other comments about the article: It raves about the neutrality of
AWB, then 
> mentions that its as much as five b* units off neutral in some
areas, with no 
> real way to deal with that. This is why I prefer profiling the color
mode, and 
> getting a* and b* values within one unit if neutral, plus full
control of how 
> I deal with paper white, paper brighteners etc.
> 
> As for the "color versus AWB" graph, my PrintFIX PRO 2 color profiled 
> grayramps are more linear than the AWB plot in this graph, so its a
matter of 
> comparing a bad color output to a good AWB one. There are many ways
to skin a cat, 
> but it bothers me when people dismiss our methods out of hand for
the wrong 
> reasons. If you are a fanatic for one tenth of a point more density
in blacks, or 
> one percent less yellow in light grays, than those are actual
reasons. All the 
> talk about better shadow detail, on the other hand, is just wrong, I
can get 
> as   much shadow detail as I want, with full control of it, from the 
> PFP2/color mode method. 
> 
> C. David Tobie
> Product Technology Manager
> ColorVision Business Division
> DataColor Inc.
> CDTobie@...
> www.colorvision.com
> 
> 
> **************************************
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> 
> 
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>