Operation Manual

contrast The difference between the brightness and color values in an image that allows
the viewer to distinguish between objects in an image. High-contrast images have a large
range of values, from the darkest shadow to the lightest highlight. Low-contrast images
have a more narrow range of values, resulting in a “flatter” look. See also Contrast
parameter, Curves adjustment, density, flat.
Contrast parameter An Enhance adjustment parameter in Aperture used to adjust the
contrast in an image. See also adjustment, contrast, Exposure adjustment.
Contrast Quick Brush A type of Quick Brush adjustment that applies additional contrast
to the area of the image the adjustment is brushed on. See also adjustment, Brush HUD,
contrast, Quick Brushes.
control bar The control bar contains buttons and controls you can use to rate and navigate
through images, as well as apply keywords to them. See also keywords, rating.
copyright The legal right to exclusive publication, production, sale, or distribution of a
literary, musical, or artistic work. Typically, these rights are in effect for a specific period
of time.
crop The process of printing or distributing only part of the original image. The general
purpose of cropping an image is to create a more effective composition. Another reason
for cropping an image is to make it fit a particular aspect ratio, such as 4 x 6. See also
adjustment, aspect ratio, composition, Crop adjustment, effects.
Crop adjustment An adjustment in Aperture that trims the image for the purpose of
changing the composition or modifying the aspect ratio. The Crop adjustment is used in
conjunction with the Crop tool. See also adjustment, aspect ratio, composition, crop.
Curves adjustment An adjustment in Aperture that selectively remaps the tonal range
of the image by applying a curve from input to output. Manipulating the curve modifies
the tonal values in the image. See also adjustment, contrast.
decompression The process of creating a viewable image from a compressed digital
image file. See also compression.
definition The clarity of details in an image. See also resolution.
Definition parameter An Enhance adjustment parameter in Aperture used to adjust the
clarity of details in an image. See also Enhance adjustment.
Definition Quick Brush A type of Quick Brush adjustment that adds clarity and reduces
haze without adding too much contrast to the area of the image the adjustment is brushed
on. See also adjustment, Brush HUD, definition, Quick Brushes.
demote In Aperture, the process of moving an image in a stack away from the pick
position. See also Full Screen view toolbar, image, pick, promote, stack.
882 Glossary