Color management
Sunday, 21. January 2007, 18:52:19
Today we're going to discuss color management.
The range of color viewable to the human eye can't be reproduced by a publishing device.
Each device operates within a specific color space; a certain range of colors or gamut can be generated.
A color model gives us the relationship between the values; the color space gives us the absolute meaning.
Some models have a fixed color space. For example LAB by virtue of relating directly to the way humans perceive colors. They are device-independent.
Whereas other models such as RGB, CMYK, HSL, HSB,...can have many different color spaces; device- dependent
The range of color viewable to the human eye can't be reproduced by a publishing device.
Each device operates within a specific color space; a certain range of colors or gamut can be generated.
A color model gives us the relationship between the values; the color space gives us the absolute meaning.
Some models have a fixed color space. For example LAB by virtue of relating directly to the way humans perceive colors. They are device-independent.
Whereas other models such as RGB, CMYK, HSL, HSB,...can have many different color spaces; device- dependent
http://en.wikipedia.org/wiki/Gamut
When transferring files between different devices, color shifts appear.
For example: different scanners, different software, different monitors due to ageing for instance.
So we need a system to make the color as consistent as possible between these different spaces.
A CMS; a color management system. CMS translates colors and therefore color profiles are being used.
http://en.wikipedia.org/wiki/Color_management
Wild ducks...copyright 2007 annick vanderschelden
View critiques and comments on my photographs these and many more at TrekNature
http://www.treknature.com/members/vanderschelden/photos/
The gamut on a LCD screen differs due to software, ageing, calibrating and is bigger than a printer gamut.
Model screen = RGB and Model printer=CMYK.
The above pictures have another gamut on different devices and are thus device-dependent; browser, monitor brand or age monitor and so forth...http://www.treknature.com/members/vanderschelden/photos/
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Commercial link: annick vanderschelden photography
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