If your interested in color and color theory you will certainly want to vist:

http://www.color-image.com

This blog is maintained by one of the brightest minds in the color industry and will feature articles on Color Theory,  ICC Profiles, and a wide range of topics with in depth information of getting the best results from your color workflow.   The blog is written by Parker Plaisted:

About the Author
Parker Plaisted is the author of this site. He has a Bachelor of Science degree in Physics-engineering from Washington and Lee University and a Master of Science degree in Imaging Science from the Rochester Institute of Technology (RIT). While at RIT, Parker studied color science in the Munsell Color Science Laboratory under professors Mark D. Fairchild and Roy S. Berns. His classmates included Ricardo J. Motta, Mark E. Gorzynski, Mitchell R. Rosen, Taek Kim, Jason Peterson, Ranjit Bhaskar, Tom Orino, David Telep, and David Erdtmann. Parker’s primary thesis advisor was Dr. Ed Granger.

From 1994 to 1996, Parker was the Director of the Imaging Division at the RIT Research Corporation where he worked on color imaging projects with J. A. Stephen Viggiano, Milt Pearson, Nathan Moroney, David Brydges, Chris Sawran, Chris Pane, Jennifer Greenwald, Bill Hoagland, and Jeff Harman. His clients included Xerox Corporation, Hewlett-Packard Company, Eastman Kodak Company, Kimberly-Clark, CalComp, IBM Printing Systems, and Heidelberger Druckmaschinen.

Parker has made technical contributions to the development of color imaging systems and to software applications that create and use ICC profiles. He has more than 10 years of experience working on the development and implementation of color imaging systems.

We look forward to contributing to Parker’s blog in the near future with complete analysis of some of the one of a kind technology that is being introduced in ImageNest Version 3.5

Turning off color management (which is necessary for printing targets) is something on our list of features and we hope to have it in the new year.  Since color management methodology has changed in Mac OSX 10.6 many people are having problems printing out ICC profile creation targets on 10.6.

Here is a very easy way to print targets without color management.

1: Open Apple’s Preview application (you will find it in the Applications folder in Mac OS 10.6.x or 10.5.x.)

2: Open your Print Profile creation target in Preview.  Your print target will not have an embedded source ICC profile and Apple Preview will not force a source ICC profile into your image (which some applications do)

3: Select Print

4: Select your printer from the Printer pop-up menu in the print dialog

5: In the Print pull-down menu, choose Color Matching, and select EPSON Color Controls.  This will bypass any color management that colorsync would apply.

6: In the same print pull-down menu choose Printer Setting and locate the option for Off (No Color Adjustment) or Off (No Color Management), and select it. It may be in a Color Settings menu, or in another color-related menu.  The dialogs differ slightly from printer model to printer model.

7: Select Print to print your target or other image.

This is the simplest way to get a ICC color profile creation target to print properly.  This target can be used to create an ICC color profile for any application that utilizes the Epson Print driver.   This includes:  PhotoShop, ImageNest, Lightroom, Aperature, and many other print applications.

ImageNest is very happy to announce that in version 3.0.1 (currently on the website) customers can now accurately soft-proof images in the ImageNest layout.   After many months we have finished redesigning the ImageNest Color Management to add the ability to color manage inside the ImageNest application.   With this new update customers will not be locked in to only using “Printer Manages Colors” and can now use “ImageNest Manages Colors” to perform all color management prior to printing.

A few facts about “ImageNest Manages Colors”

Uses the rendering intent selected in ImageNest preferences to map image colors from source ICC profile (input) to destination ICC profile (output)

Performs all color management prior to printing.

Works with printing and creating PDF files

One of the goals of almost every photographer is to produce a print with the darkest black point and lightest white point as possible.  I get questions about this all the time so I will try to answer with the technical facts without making this document unreadable.  Too much technical jargon makes everyone€™s head spin but on a subject such as ICC profiling it is simply impossible to lay out the facts without a fair amount of technical detail.

ICC profiles are all based on CIE Lab color.  CIE lab is a measurement of color based on human perception.  If a color does not exist in CIE lab, technically it does not exist.  Think of the old philosophical argument, If a tree falls in the woods and no one can hear it does the sound exist?  The same is true for color, If a color can not be seen with the human eye it is not within the CIE lab space, and to humans, does not exist.
Now, just because a human eye can perceive a color can it be reproduced?  Unfortunately the answer is no.   CIE Lab is composed of three parts, Lightness, A axis chromatic, and B axis chromatics.  For the Lightness component, pure black is represented by 0 L and pure white is represented as 100 L.   Here is where it gets interesting.   O L and 100 L are colors that cannot be reproduced on earth.  The only place where 0 L conceptually can exist is inside of a black hole.  But, even though they do not exist on earth, theoretically, they can be perceived by humans so they do exist in CIE lab.

Okay, that is the technical part and should outline the problem,  Photographers are working in Color Spaces that contain colors that do not exist.  So before you get started printing know that there are certain things that are not possible.  That being said, there certainly is a way to optimize how dark of a black you can achieve.   The same is true for white point.  Your paper color is your white point.
1:  If your only goal is black then dye inks produce prints with a better black point.  Unfortunately dye inks are made from vegetables and not only fade quickly but also change color appearance dramatically.  Pigmented inks are the preferred choice for anyone who needs a lasting print and most new inkjet printers are pigment based.

2:  Photo Papers produce a much better black point than fine art papers.  They hold more ink and since the blackest black you can get is a combination of CMYK generally the more ink a paper can hold the blacker black you can get.

3. Printer models all have different formulations of CMYK inksets and some can get blacker than others.  It of course depends on the paper used but some printers get to a better black point than others.  Test out a few at your local dealer before purchasing one.

4:  Papers with optical brighteners usually have a darker black point and a whiter white point.  Some photographers dislike papers with optical brighteners as the brightener may yellow with age.  Keep in mind though,  it is generally a very long time (at least 20 years) before this can happen even on cheaper papers.  The dirty little secret in the industry is that almost all papers have some type of optical brightener applied.  Paper is made from wood and cotton, neither of which is bright white.  If a paper is white, chances are that it has optical brighteners and if you haven€™t noticed problems by know you probably won€™t.

These tips should help you get the most out of your photogrhy in conjuctions with our Software RIP

How to properly apply an ICC profile has long been a subject of much conjecture. Should you apply your profile in an application ? Should you apply it in the print driver ? Is my profile really getting used ? Ask 5 different people and you will probably get five different answers since Photographers are using different applications to print with. Things can also differ because of operating systems.

Below is a rock solid method to properly color manage on Mac OSX regardless of what application you are using or what Mac OS you are using. In this method if you application has an option for PRINTER MANAGES COLOR, that is what setting you should use. If your application does not have an option, that is what is happening by default so you do not need to do anything (Apple Preview would be a good example of this).

Step one: Open the ColorSync Utility. It can be found in applications/utilities (of course it is a lot easier just to spotlight it)

Step two: Select the Devices icon at the top of the window and then expand the profile view for the printer you wish to configure ICC Profiles for

Software RIP ImageNest

Step Three: Select the paper that you wish to assign a custom profile for. Some manufacturers use abbreviations for their paper types. In this example Pro38 PLPP is selected. This is an abbreviation for Epson Stylus Pro 3800 Premium Luster Photo Paper. Remember, profiles are always made for a specific printer and paper combination

Step 4: On the right side you will see the Current Profile. Click on the Down arrow and you will be able to change this profile to whatever custom profile you wish.

Mac RIP

Step 5: Navigate to the folder that contains the profile you wish to use. Generally, when you create a custom profile it is saved to the ColorSync folder but it can be in any folder you wish.

OSX RIP

Step 6: Now your default profile for the Epson 3800 has been changed so every time you choose Premium Luster Photo Paper the custom profile that you set will be used.  In addition to being able to use your custom ICC profile with ImageNest Printing Software