Apple MB673Z/A User Manual - Page 637

V What Is a Color Space? When compared to the full spectrum of light, the gamut of a display or printer is relatively narrow. Because of the small gamuts of the devices, mathematical models are used to simulate the full spectrum of light within the gamuts of the devices. These models are known as color spaces. Color spaces in which the interpretation of a color is not dependent on a specific device are known as device independent. The Commission Internationale de l'Eclairage (CIE) was established in 1931 to create standards for a series of color spaces representing the visible spectrum. The CIE color spaces, CIE XYZ and CIE Lab, are found in ColorSync Utility. As technology evolved, new color spaces were created for RGB and CMYK color. Device-independent color spaces are used by ColorSync Utility, Aperture, and other color management systems to transfer and transform color data from one device to another. Color from one device-dependent color space, such as a display, is translated to a device-independent color space, such as sRGB, and then translated to another device-dependent color space, such as a printer. The independent color space acts as an objective interpreter, ensuring that the color data is accurately passed on to the next device. Understanding ColorSync Utility ColorSync Utility is the color management system used by Mac OS X. ColorSync is completely integrated with Mac OS X and available to all native Mac OS X applications, including Aperture. ColorSync is used to manage accurate color, from image acquisition to image manipulation and display to publishing. ColorSync is used consistently by all devices and applications in your workflow. Appendix B Calibrating Your Aperture System 637