Digital BW, The Print

> 
> > From: Paul Roark <paul.roark@...>

> >
> > B.  Color managed workflow:  Print with Preview set to "Let Photoshop
> > Determine Colors" and an ICC make with Create ICC inserted, 
> > driver set to No Color Adjustment.
> >
> > 1.  Gray Gamma 2.2 working space -- 90-100 separation = 3.4;
> >
> > 2.  Dot Gain 20% working space -- 90-100% separation = 8.2.
> >
> > Here the 90 - 100% separation of the Gray Gamma 2.2 print is clearly
> > compressed relative to the Dot Gain 20% print.


From Steve:

> It's not "compressed". 

A Lab L* separation of 3.4 is clearly "compressed" relative to 8.2 in the
way I use the language.

> It was closer to begin with. 

No, the original file values were the same.  It was the same file.

> By saying it is
> compressed you suggest that something in the printing narrowed the gap.

When I was comparing the difference between a color-managed and non-color
managed workflow, that is true.

> What really happened is that when you assigned GG2.2 to the step wedge you
> gave new definition to the 90 step.

I don't think we are disagreeing here.  It's just language.  When I used the
ICC in the "Print with Preview," it utilized the GG2.2 definition of the
file value.  When I used "No Color Management" it did not utilize the GG2.2
definition.  The decision to use or not use the ICC/color managed approach
was in the printing workflow.  

On the other hand, what workspace is used is made before the file is
printed, and this will affect how the image is printed in a color managed
workflow.

 
Paul
www.PaulRoark.com