The ratio of horizontal to vertical dimensions of an image. i.e. 35mm slide frame is 3:2, TV 4:3, 4X5 film 5:4.  

An artifact of color gradation in computer imaging, when graduated colors break into larger blocks of a single color, reducing the "smooth" look of a proper gradation.

The lightness of a colour or tone, regardless of hue or saturation.  

Term used for a device that can read the information from a Memory card.

The abbreviation for compact disc, a laser-encoded plastic medium designed to store a large amount of data. A variety of CD formats are available for use by computers.

One piece of information stored with an image. RGB, for example, have three channels - red, green and blue. CMYK has four - cyan, magenta, Yellow and Black.

The primary colours of the halftone printing process.

A software system that ensures colour consistency and repeatability across all devices in a produsction workflow.

A mathematical model that is used to describe colour in which each colour is represented by a point in space. Each colour is defined in terms of three numbers and plotted as a point in space relative [..]

A variation between the lightest and darkest areas in an image.