Apple Aperture 3.5 - Manual (Page 512)

Glossary 512
full-screen view A workspace view in Aperture with minimal user interface, used to view full-
screen photos in high resolution with the least amount of light and color interference. See also
Browser layout, filmstrip, HUD, Split View layout, Viewer layout.
full-screen view toolbar A collection of buttons and tools, grouped by function, located at the
top of the screen in full-screen view. See also toolbar.
gamma A curve that describes how the middle tones of an image appear. Gamma is a nonlinear
function often confused with brightness or contrast. Changing the value of the gamma affects
middle tones while leaving the whites and blacks of the image unaltered. Gamma adjustment is
often used to compensate for differences between Mac and Windows video cards and displays.
The Mac Standard gamma is 1.8; the PC Standard is 2.2.
gamut The range of colors an individual color device is capable of reproducing. Each device
capable of reproducing color has a unique gamut determined by age, frequency of use, and
other elements such as inks and paper. See also device characterization, device dependent, gamut
mapping, ICC profile.
gamut mapping The process of identifying colors outside a device’s gamut and then calculating
the nearest color within its gamut. Gamut mapping is used when receiving color information
from another color space. See also color space, gamut.
Global Positioning System (GPS) A U.S. space-based navigation system that provides reliable
positioning, navigation, and timing services for civilian users on a continuous, worldwide basis.
Aperture uses photo location information provided by GPS-enabled cameras to plot where each
image was shot on a map in Places view. See also GPS track log, Places view.
GPS track log A file consisting of digital bread crumbs that are used to define a path or route
(“track”) using precise coordinates saved by a GPS device or GPS tracking iOS application. If you
have a GPS-enabled camera or iOS device or another GPS device that you use to create track files
and save waypoints, you can import the track files into Aperture and work with them in Places
view. See also Global Positioning System (GPS), Places view, waypoint.
grayscale Describes an image whose only colors are shades of gray. Usually grayscale images
have smaller file sizes because less information is required to display a gray pixel, in which the
red, green, and blue pixel elements all emit an equal intensity. See also Black & White adjustment,
monochrome, pixel.
grid view A Browser view that displays photos as a grid of thumbnails. Grid view is the Browser’s
default view. See also Browser, filmstrip view, list view.
Halo Reduction Quick Brush A type of Quick Brush adjustment used to remove the blue
and purple fringes that are occasionally produced with certain lenses when the image is
overexposed. See also adjustment, Brush HUD, Quick Brushes.
high-definition video Generally refers to video that is 720 progressive scan lines or better, also
known as HD video.
highlights The brightest areas of the subject or scene. See also contrast, density, shadows.
Highlights & Shadows adjustment An adjustment in Aperture used to selectively adjust the
highlights and shadows in an image. See also adjustment, highlights, shadows.
hot shoe An apparatus at the top of a camera designed to hold a portable flash. When the
shutter release button is pressed, an electric signal is transmitted through a connection in the
hot shoe to activate the portable flash. See also external flash, flash.
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