Apple Aperture 3.5 - Manual (Page 505)

Glossary 505
color depth The possible range of colors that can be used in an image. There are generally three
choices with digital images: grayscale, 8-bit, and 16-bit. Higher color depths provide a wider
range of colors but require more storage space. See also bit depth, color channels, grayscale.
colorimeter An instrument capable of measuring the color value of a sample, using color filters.
A colorimeter is used to determine if two colors are the same. However, it does not take into
account the light under which a sample is measured. Colorimeters are often used to calibrate
displays and printers. See also calibration.
colorimetry The science of measuring color both objectively and perceptively.
color interpolation The process of calculating additional color values from light captured via the
red, green, and blue elements on the digital image sensor.
color label A type of metadata that can be assigned in Aperture to help organize and filter
photos. You can assign one of five color labels to a photo, as well as assign a specific meaning to
each type of color label. See also metadata.
color management system (CMS) An application that controls and interprets the reproduction
of color between devices and imaging software for accuracy. See also ColorSync.
color matching method (CMM) A software algorithm designed to translate color information
from one device profile to another, such as from your display to your printer. ColorSync is a
thoroughly integrated CMM used by OS X. See also ColorSync.
Color Monochrome adjustment An adjustment in Aperture that desaturates the image and
applies a color tint of your choosing to the midtones. See also adjustment, desaturate, image,
midtones, monochrome, Tint adjustment.
color space A mathematical model used to describe part of the visible spectrum. Color from one
device is mapped from the device-dependent value to a device-independent value in a color
space. Once in an independent space, the color can be mapped to another device-dependent
space. See also device dependent, device independent.
ColorSync A color management system that is part of the Mac operating system. In OS X,
ColorSync is thoroughly integrated with the entire operating system and is available to all native
OS X applications. See also color management system (CMS), color matching method (CMM),
ColorSync Utility.
ColorSync Utility A centralized application for setting preferences, viewing installed profiles,
assigning profiles to devices, and repairing profiles that do not conform to the current ICC
specification. See also ColorSync, International Color Consortium (ICC), profile.
color temperature Describes the color quality of light. Color temperature is measured in units
called kelvins (K). See also kelvin (K), White Balance adjustment.
Commission Internationale de l’Eclairage (CIE) An organization established in 1931 to create
standards for a series of color spaces representing the visible spectrum of light. See also color
space, device dependent, device independent, lab plot.
compare photo In Aperture, a photo set to remain onscreen while other photos are viewed
against it. The compare photo is indicated by a green border. See also image.
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