Digital BW, The Print

Carl,

Here it is.  I'll have more time to get to this later.  I don't know if it's
the uneven steps, PC or what that is crushing the shadows.  For manual
input, however, an uneven entry really helps.  The shadows are almost always
were the action is.  I'll post the actual Lab L readings later. 


File: C:\Documents and Settings\Paul Roark\Desktop\C86_G2_Con-10-out.txt
Step	Dens	Lab	A	B	
0.00	0.034	97.00	0	0	-                             b
L +
10.00	0.148	87.52	0	0	-                             b
L       +
20.00	0.233	81.03	0	0	-                             b
L           +
30.00	0.338	73.52	0	0	-                             b
L               +
40.00	0.465	65.16	0	0	-                             b
L                    +
50.00	0.599	57.24	0	0	-                             b   L
+
60.00	0.783	47.62	0	0	-                           L b
+
70.00	1.012	37.36	0	0	-                     L       b
+
80.00	1.229	29.17	0	0	-                L            b
+
85.00	1.340	25.49	0	0	-              L              b
+
90.00	1.429	22.74	0	0	-            L                b
+
95.00	1.519	20.15	0	0	-           L                 b
+
96.00	1.534	19.74	0	0	-          L                  b
+
97.00	1.542	19.51	0	0	-          L                  b
+
98.00	1.572	18.71	0	0	-          L                  b
+
99.00	1.574	18.66	0	0	-          L                  b
+
100.00	1.607	17.80	0	0	-         L                   b
+

Created ICC file C:\Documents and Settings\Paul
Roark\Desktop\C86_G2_Con-10.icc

Paul
www.PaulRoark.com 

_______________________________

> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Carl
> Schofield
> Sent: Wednesday, October 19, 2005 11:54 AM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] ICC v. Transfer Function in Epson driver
> 
> Paul,
> 
> I thought the steps had to be evenly spaced, but maybe not if you
> were able to generate an icc profile.  Can you post the text file
> that was generated when you made the icc profile?  I'm just wondering
> how Create-icc  treated the uneven steps.  My experience has been
> that the icc profiles improve shadow separation in 2400 ABW prints,
> rather than compress the data.
> 
> Carl
> 
> On Oct 19, 2005, at 10:37 AM, Paul Roark wrote:
> 
> > Steve,
> >
> > I thought maybe my, in my view too-compressed, low values might
> > just be an
> > artifact of a bad un-adjusted distribution and too few points.  So,
> > I tried
> > the Create ICC and Print with Preview workflow with a printing
> > setup that
> > had a reasonably smooth low end.  I took readings at every 1% point
> > between
> > 100% and 95%, then at 5% to 80%, and then at 10% intervals.  I was
> > also
> > curious if the program needed even distributions of input data.
> >
> > The results were not much different than my previous attempts.
> > Whereas the
> > un-adjusted printing setup separated all the 95% - 100% points
> > reasonably,
> > the output adjusted with the Create ICC compressed the dark tones and
> > posterized the 95% - 100% range.
> >
> > I don't know what caused this, but it's not, in my view, an output
> > that
> > efficiently utilizes the grayscale file information.
> >
> > Paul
> > www.PaulRoark.com
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
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