Digital BW, The Print

Marco,

>I start to use UT-3d with my 2100 about 3 months ago. ...
>... I want to try some different papers. 
>...
>1 - I can use a curve to linearizing a print ramp from 
> black to white (using a good scanner or a densitometer/ spectro). 

>But how can I control the tone of my print?

See http://home1.gte.net/res09aij/Embedding_Photoshop_Curves_in_ICCs.pdf
The tone curve is used to print the 21-step curve and is also dropped into
the ICC along with the Lab L readings.

I've posted not only the ICCs but also the tone curve at
http://home1.gte.net/res09aij/UT-3D_Downloads.html

The tone curves that I've posted will probably be close enough for many
papers.  If not, then find the one that is closest, and use it as a starting
point to make a one for the new paper.

>2 - which difference if I use only the L value or 
> all the L+a+b value?

The 3D inkset makes a reasonably neutral tone when no curve is used, but
you'll usually be better off with an RGB curve embedded in the ICC along
with the Lab L numbers.

>3 - with the new printfix pro 2.0 is possible to create 
> profile directly also for a UT-3D set?

Yes. PFP 2.0 will make a neutral ICC.  With that neutral ICC you still have
some control of tone by using that ICC for soft proofing and then using
Color Balance of other tools in Photoshop to alter the RGB values.  The
color balance controls will not be labeled correctly due to the 3D's
"twisted" color space, but the soft proofing on the monitor works.  The
range of tones you can bet with this approach is less than will curves, but
it's easier.  Keep an eye on the 21-step ramp smoothness.  When you go too
far with the color balance controls the ramp will become visibly distorted.

> Is a good solution or I can do better with QTR create ICC?

It's a question of how appropriate the existing tone curve is for the new
paper you're interested in and how comfortable you are with the various
approaches.  It's good to have multiple workflows available.

>4 - the printfix pro 2.0 will work also with the old printfix 
> or only with the printfix pro?

C. David will have to answer this one.

Good luck with your system.

Paul
www.PaulRoark.com