ICC Profiles and CTL Monitors

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    ICC Profiles & CTL Monitors
    Overview

    CTL provides the following online support regarding ICC profiles for our monitor line. Because of the wide variety of factors that can affect a perceived display of color on a particular monitor and because reproducing color from input and output devices relies on 3rd party manufacturers, CTL limits technical support regarding ICC profiles to the following document.


    About ICC Profiles

    An ICC profile is a file that describes how a particular device reproduces color, that is, it describes the device''s color space. ICC profiles can be created for three types of devices: a display device (monitor), an input device (a scanner or digital camera), or an output device (a printer). A profile that accurately characterizes a device gives you the best results in a color-managed workflow.

    ICC profiles can be either generic or custom. Generic profiles are created by the device manufacturer. The manufacturer creates the profile by using profiling software and instruments to examine the color characteristics of a group of the same devices under controlled conditions. The generic profile that comes with a device is not specific to that device or its working conditions.

    Custom profiles describe a specific device under set working conditions. Typically, custom profiles are created by using a color measuring instrument, such as a spectrophotometer or colorimeter, and its companion software. You can also create custom display profiles by using Adobe® Gamma to modify a generic profile for your monitor. (Adobe® Gamma is a control panel that installs with various Adobe® programs, including Photoshop®. See the bottom of this page for more information on using Adobe® Gamma.) Third-party applications let you create a display profile by using a colorimeter to characterize your screen; some also let you create an input profile for your scanner and a output profile for your printer.

    Some generic ICC profiles can be found on the internet, however, it is important to note that these profiles, like all generic ICC profiles, should be used only as a baseline for color calibration. Displayed colors can vary on a given display product due to a wide range of factors such as ambient lighting, the amount of use that the display product has had and even the current background color of the desktop!

    Because of this, CTL recommends that graphics professionals who wish to use ICC profiles develop a custom ICC profile and update it on a regular basis. Such a custom ICC profile can be created using CTL''s generic ICC profile for a specific monitor and modifying it with spectrophotomer or colorimeter hardware or by using color calibration software such as Adobe Gamma to best reflect the specific working conditions relating to a users monitor.


    More Information

    International Color Consortium (ICC) Web site
    ICC Web Site: http://www.color.org/

    Basic Color Theory for the Desktop
    http://dba.med.sc.edu/price/irf/Adobe_tg/color/main.html

    Links to companies that make software or hardware that generate ICC profiles for an individual monitor.
    ICC Hardware and Software: http://www.adobe.com/cfusion/knowledgebase/index.cfm?id=321382

    Frequently Asked Questions about Color Management
    ICC Color Management FAQ: http://www.color.org/faqs.pdf

    In Windows, ICC profiles have a *.icm extension; in Mac OS, ICC profiles usually have a *.pf or *.icm extension. (*.icm files are cross-platform compatible.)

    Adobe ICC Profiles: http://www.adobe.com/cfusion/search/index.cfm?loc=en_us&term=icc+profiles&s_pageName=http://www.adobe.com/downloads/&s_channel=Channel:n/a&siteSection=downloads:%3FnotFoundID%3Dnull

    Using Adobe® Gamma

    Adobe Gamma is a color calibration software that installs with various Adobe® programs including later versions of Adobe® Photoshop®. Other calibration software can be found on the internet by doing a search for "Color Calibration Software". If you have Adobe® Gamma installed on your system, you can access it in your control panel or in C:\Program Files\Common Files\Adobe\Calibration (double click Adobe® Gamma.cpl). When calibrating your monitor with this software, CTL recommends that if asked by the software for the phosphors that your monitor uses, that you use "HDTV (CCIR 709).

    By downloading any ICC profiles for CTL Monitors, user acknowledges that color can vary on specific display devices independantly of any ICC profile. CTL provides this ICC profile information for customers to use as a general baseline in further calibrating their monitor through 3rd party tools. CTL assumes no responsibility for any consequenses of the use of these profiles or from the information contained within this document.

    Profiles are commonly stored in the following locations:

    Windows XP Winnt/System/Spool/Drivers/Color OR - Windows/System32/Spool/Drivers/Color
    Windows 2000 Winnt/System/Spool/Drivers/Color
    Windows 98 and Me Windows/System/Color folder
    Mac OS System Folder: Color Sync Profiles (ColorSync 2.5 and later) System Folder: Preferences: Color Sync Profiles (ColorSync 2.1.2 or earlier)


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