Apple Aperture 2 - Manual (Page 656)

656 Glossary
inkjet printer A type of printer that creates images by spraying little ink droplets onto
the paper. See also
dye sublimation , photo printer , print , RA-4 .
Inspector pane An element of the main Aperture workspace that contains the
Projects, Metadata, and Adjustments inspectors. See also
Inspector HUD .
Inspector HUD A floating window that contains the Projects, Metadata, and
Adjustments panes. See also
Inspector pane .
International Color Consortium (ICC) An organization established to create the color
management standard known as the ICC profile. ICC profiles are universally accepted by
hardware and software vendors because they’re based on an open standard. See also
ICC profile .
IPTC Short for International Press Telecommunications Council. IPTC metadata is used by
photographers and media organizations to embed keywords (words describing the
characteristics of the image, including the photographer’s name) in the image files
themselves. Large publishers typically use image management systems to quickly identify
images based on the IPTC information embedded in the image. See also
EXIF , metadata .
iris See pupil .
ISO speed The relative sensitivity of film provided as a benchmark by the International
Standards Organization (ISO). In digital cameras, the minimum ISO rating is defined by
the sensitivity of the digital image sensor. When the ISO setting on the camera is
increased, allowing the photographer to shoot in low-light situations, the camera
amplifies the voltage received from the light-sensitive elements on the digital image
sensor prior to converting the voltage signals to digital values. See also
digital image
sensor , digital noise .
JPEG Short for Joint Photographic Experts Group, JPEG is a popular image file format
that lets you create highly compressed graphics files. The amount of compression used
can be varied. Less compression results in a higher-quality image. JPEG files usually
have the “.jpg” extension. See also
format .
kelvin (K) A unit of measurement used to describe color values of light sources, based
on a temperature scale that begins at absolute zero. See also
color temperature , White
Balance adjustment .
keywords Descriptive words about the subject in the image that are added to image
versions and saved as metadata. See also
control bar , Keywords HUD , metadata .
Keywords HUD A floating window containing a library of keywords that can be
applied to an image selection. See also
keywords , metadata .
lab plot A visual three-dimensional representation of the CIE Lab color space. See also
color space , ColorSync .