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Creation of B&W ICC Profiles

2014-07-22 by Wallace Kistler

I've installed Roy's QTR and have a X-Rite Eye-One Spectrophotometer.

I'm using an Epson Stylus Pro 7900 printer with the UltraChrome HDR inks.

Following the QTR Eye-One-ReadMe I've opened QTR and selected the Step-21x4-random.tif

The help information states "Print targets with QTR and all the selections you want to profile or linearize".

I assume this refers to the paper type (Matte / Photo), the curves:

UCmk-EpsEnhMatte-Cool, UCmk-EpsEnhMatte-Coolse, UCmk-EpsEnhMatte-Sepia, and UCmk-EpsEnhMatte-Warm.

Resolution (720, 1440, or 2880dpi), Speed (Bi or Uni-directional), and Black Ink (-Installed-, Matte Ink, Photo Ink)

Most are simple choices (Matte paper, 2880dpi, and Bi-directional).

As for selection of the curve or curves and the Black Ink I'm not really sure which to choose.

The printer has 4 Black Inks: Photo Black, Matte Black, Light Black and Light Light Black.

Installed seems like a good choice - which black will be used in printing the 21 grey shades?

I would also like to understand the curve selection - what is the difference in Cool, Coolse, Sepia, and Warm?

Thanks,

W Kistler

Re: [QuadtoneRIP] Creation of B&W ICC Profiles

2014-07-22 by Davide D'Angelo

Hi wallace
You should read the guide "quad Tone Rip a better black & white" by Diallo photgraphy! It is a very well done step by step guide that explaine how to get optimal profiles. If you do not find it on internet email me that I can sent to you the pdf version! I can do it because it is possible spread the guide foreducational purposes


Davide D'Angelo
Tel +39 333 8408014
Email: davide@...
Web: www.davidedangelo.com

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> Il giorno 22/lug/2014, alle ore 20:53, "Wallace Kistler wgkistler@... [QuadtoneRIP]" <QuadtoneRIP@yahoogroups.com> ha scritto:
>
> I've installed Roy's QTR and have a X-Rite Eye-One Spectrophotometer.
>
> I'm using an Epson Stylus Pro 7900 printer with the UltraChrome HDR inks.
>
> Following the QTR Eye-One-ReadMe I've opened QTR and selected the Step-21x4-random.tif
> The help information states "Print targets with QTR and all the selections you want to profile or linearize".
>
> I assume this refers to the paper type (Matte / Photo), the curves:
> UCmk-EpsEnhMatte-Cool, UCmk-EpsEnhMatte-Coolse, UCmk-EpsEnhMatte-Sepia, and UCmk-EpsEnhMatte-Warm.
>
> Resolution (720, 1440, or 2880dpi), Speed (Bi or Uni-directional), and Black Ink (-Installed-, Matte Ink, Photo Ink)
>
> Most are simple choices (Matte paper, 2880dpi, and Bi-directional).
>
> As for selection of the curve or curves and the Black Ink I'm not really sure which to choose.
>
> The printer has 4 Black Inks: Photo Black, Matte Black, Light Black and Light Light Black.
> Installed seems like a good choice - which black will be used in printing the 21 grey shades?
>
> I would also like to understand the curve selection - what is the difference in Cool, Coolse, Sepia, and Warm?
>
> Thanks,
> W Kistler
>

Re: Creation of B&W ICC Profiles

2014-07-25 by richard@...

Printing with custom QTR "profiles" is totally different than the way you print color images with a custom ICC profile with photoshop or lightroom controlling the color/tonal adjustments. When the instructions to make ICC profile say to choose the printer/ink settings you want to use for printing the step wedge it means the output dpi, photo or matte black, dithering algorithm, and the mix of the different tint curves/profiles for the given paper.

This can be a confusing subject to discuss because both methods refer to "profiles," but are actually used in completely different ways. Print "tone" is also hard to talk about because in the darkroom we used different papers (warm tone/cool tone) or "toned" the prints with selenium, sepia, etc. to change the print color. When making digital prints "tone" can be talked about as ink density as well as print color.

When discussing QTR I prefer to think of the ink profiles for papers and the tint/color as a "Curve" and the ICC profile only as a soft proofing tool that will approximate the tone (density) and color (tint) for the "curve(s)" used to print the target.

If you are using a paper that has pre-made curves for your printer included with QTR, then you can print the test target with the curve (or a custom blend/combination of curves), measure the target with the photospectometer, and then use the ICC creation tool to make the softproofing profile.

I would actually suggest printing the 21x1 step-wedge multiple times with only one curve each time to see what each one will look like. I would then test a few different curve blends to see what tint will suit your preferences. Then print the 51 stepwedge target with those desired settings and use the ICC creation tool to build the profile for softproofing.

If you are not using a paper that has pre-made curves you will need to build your own, which is relatively easy once the process is understood. Then you do the same as if you had pre-made curves—print the stepwedge with the desired settings, then measure and use the ICC creation tool.

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QTR-Quadtone RIP

Creation of B&W ICC Profiles

Creation of B&W ICC Profiles

Re: [QuadtoneRIP] Creation of B&W ICC Profiles

Re: Creation of B&W ICC Profiles

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