Digital BW, The Print

I was wondering...

Simply profiling the inksets via Profiler Plus or Profiler Pro may not 
be exact enough given the subtleties of greyscale...

BUT,,,


Profiling could serve a use in the following way...

Supposing when doing the 1270/870 curves Dave FIRST profiles the ink and 
media...

Then writes new transfer curves USING that profile...

That could make the curves a hell of a lot more generic for that 
printer... in the sense that by building other profiles one could 
roughly adjust for media...

Instead of creating newly tweaked curves for each and every paper, one 
could potentially simply profile the paper and then print via Paul's 
Curves..

Pauls' pre-existing curves would be fine for someone unwilling to 
profile  or  adjust the curves for new media, while the "profile driven" 
 curves perhaps could be an intermediate level  solution for those 
working with more media and profiling options..


Comments?


Keith



[Non-text portions of this message have been removed]

Aren't all the RGB partitioned curves (and the lumped RGB curves as 
well) really just specific paper/inkset profiles with the color 
(grayscale in this case) mapping values stored in three continuous 
transfer curves (R,G,B) rather than as descrete values in a color 
look-up table?  

Jeff Randall

--- In DigitalBlackandWhiteThePrint@y..., "Editor P.O.V. Image 
Service" <editor@p...> wrote:
> I was wondering...
> 
> Simply profiling the inksets via Profiler Plus or Profiler Pro may 
not 
> be exact enough given the subtleties of greyscale...
> 
> BUT,,,
> 
> 
> Profiling could serve a use in the following way...
> 
> Supposing when doing the 1270/870 curves Dave FIRST profiles the 
ink and 
> media...
> 
> Then writes new transfer curves USING that profile...
> 
> That could make the curves a hell of a lot more generic for that 
> printer... in the sense that by building other profiles one could 
> roughly adjust for media...
> 
> Instead of creating newly tweaked curves for each and every paper, 
one 
> could potentially simply profile the paper and then print via 
Paul's 
> Curves..
> 
> Pauls' pre-existing curves would be fine for someone unwilling to 
> profile  or  adjust the curves for new media, while the "profile 
driven" 

>  curves perhaps could be an intermediate level  solution for those 
> working with more media and profiling options..
> 
> 
> Comments?
> 
> 
> Keith
> 
> 
> 
> [Non-text portions of this message have been removed]

In a message dated 5/8/02 3:23:14 PM, editor@... writes:

>I was wondering...
>
>Simply profiling the inksets via Profiler Plus or Profiler Pro may not
>
>be exact enough given the subtleties of greyscale...

That is probably an understatement... given the inksets you have in mind.
>
>BUT,,,
>
>
>Profiling could serve a use in the following way...
>
>Supposing when doing the 1270/870 curves Dave FIRST profiles the ink and
>
>media...
>
>Then writes new transfer curves USING that profile...

Hmmm, you are suggesting basing a curve set on a profile... sounds like oil 
and water to me.

>
>That could make the curves a hell of a lot more generic for that 
>printer... in the sense that by building other profiles one could 
>roughly adjust for media...
>
>Instead of creating newly tweaked curves for each and every paper, one
>
>could potentially simply profile the paper and then print via Paul's 
>Curves..

This would use the profile as a liniarization under the curves... which might 
or might not even be possible, but it certainly would manage to break all the 
rules.
>
>Pauls' pre-existing curves would be fine for someone unwilling to 
>profile  or  adjust the curves for new media, while the "profile driven"
>
> curves perhaps could be an intermediate level  solution for those 
>working with more media and profiling options..

Certainly some combination of curves and profiles is the ultimate solution, 
but it involves a CMYK RIP as well...

C. David Tobie
Design Cooperative
CDTobie@...