- additive color
The color space of computer displays. It uses primary elements composed of the light source itself to produce other colors. RGB is a common form of additive color. See also RGB. - adjustments HUD
A heads-up display, or floating panel of contextual controls, that enables adjustments to be applied to images. - adjustments inspector
An area of the main window where image adjustments can be viewed or performed. The inspector shows a luminance histogram along with controls for three basic filters: exposure, levels, and white balance. - Adobe DNG
Adobe's Digital Negative archival format for raw digital camera files. Aperture supports the DNG format. - Adobe RGB (1998)
A commonly used color profile often used for printing. Many professional labs request that image files be delivered in this color space. See also color space. - album
A type of folder in Aperture that contains only versions. See also Smart Album. - alternate
The image immediately below the pick in a stack. Alternate images are used when more than one image in a stack merits the pick position. See also pick, stack. - ambient light
The natural light in a scene, indoor or outdoor, without additional lighting supplied by the photographer. - analog-to-digital conversion
The transformation of light energy voltage values captured by the camera's digital image sensor into binary (digital) numbers for processing and storage. See also quantization. - angle of view
Determined by the focal length of the lens, angle of view refers to the area of the scene displayed within the frame. - aperture
An adjustable iris or diaphragm in the lens through which light passes. The aperture is measured in f-stops. See also f-stop. - aspect ratio
The ratio of height to width of a photograph. Common aspect ratios are 3.5 x 5, 4 x 6, 5 x 7, 11 x 14, and 16 x 20 inches. |