Apple Aperture 3.5 - Manual (Page 514)

Glossary 514
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 varies. Less
compression results in a higher-quality image. JPEG files usually have a .jpg extension. See also
format, RAW + JPEG image pair.
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 photo that are added to photo versions
and saved as metadata. See also control bar, Keywords HUD, metadata, version.
Keywords HUD A floating window containing a library of keywords that can be applied to a
photo selection. See also keywords, metadata, photo selection.
lab plot A visual three-dimensional representation of the CIE Lab color space. See also color
space, ColorSync.
lens A series of sophisticated elements—usually glass—constructed to refract and focus the
reflective light from a scene at a specific point: the digital image sensor in a camera. See also
camera, digital image sensor, macro lens, prime lens, telephoto lens, wide-angle lens, zoom lens.
Levels adjustment An adjustment in Aperture that provides controls to selectively adjust the
tonal range of an image. See also adjustment, image.
library In Aperture, a container file that holds projects, folders, albums, originals, and versions.
You organize items in the library, rename items, sort items, and so on using the Library inspector.
By default, the Aperture Library file is located in your Pictures folder. See also album, folder,
merging libraries, original, project, version.
Library Path Navigator pop-up menus A set of pop-up menus at the top-left corner of the
screen in the full-screen view Browser mode that are used to provide access to all the items in
the Library inspector. See also Browser mode (full-screen view), full-screen view, library.
Lift & Stamp HUD A floating window that displays the attributes lifted from a photo. You can
choose which attributes are stamped on a photo selection by deselecting the attributes you
don’t want to apply. See also HUD, Lift and Stamp tools, photo selection.
Lift and Stamp tools A pair of tools used in conjunction with the Lift & Stamp HUD to copy (lift)
attributes, such as metadata and adjustments, from one photo and paste (stamp) them on a
photo selection. See also adjustment, Lift & Stamp HUD, metadata, photo selection.
light Visible energy in the electromagnetic spectrum with wavelengths ranging between 400
and 720 nanometers. See also electromagnetic radiation.
light meter A device capable of measuring the intensity of reflective light. Light meters are used
as an aid for selecting the correct exposure settings on the camera. Most cameras have internal
light meters. See also center-weighted metering, evaluative metering, meter, spot metering.
Light Table An area in the Aperture main window that appears when you select a Light Table
album. The Light Table provides a large open space where you can place a selection of photos for
review and drag them to new positions, group them in different combinations, and resize them
as needed. See also album, Navigator button.
67% resize factor