Complementary metal oxide semiconductor (cmos) – Apple Aperture User Manual
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Glossary
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Commission Internationale de l’Eclairage (CIE) An organization established in 1931 to
create standards for a series of color spaces representing the visible spectrum of light.
See also
complementary metal oxide semiconductor (CMOS) A type of digital image sensor
that is capable of recording the entire image provided by the light-sensitive elements
in parallel (essentially all at once), resulting in a higher rate of data transfer to the
storage device. Tiny colored microlenses are fitted on each light-sensitive element in a
CMOS sensor to increase its ability to interpret light. See also
.
compositing A process in which two or more digital images are combined into one.
See also
.
compression The process by which digital image files are reduced in size. Lossy
compression is the process of reducing digital image file sizes through the removal of
redundant or less important image data. Lossless compression reduces file sizes by
mathematically consolidating redundant image data without discarding it. See also
composition The arrangement of visual elements in a scene.
contact sheet Based on a print preset in Aperture, a printed selection of thumbnail-sized
images with or without associated metadata. Contact sheets in Aperture are similar in
appearance to contact prints made by exposing negatives or transparencies against
photographic paper.
cones A type of receptor in the eye capable of perceiving color. There are three types
of cone cells, each sensitive to a particular frequency range in the visible spectrum.
Cone cells are capable of seeing either red, green, or blue colors. See also
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
.
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
.
decompression The process of creating a viewable image from a compressed digital
image file. See also
.
definition The clarity of details in an image. See also
.