Continuous tone.

Images which are made up of smoothly graduated tones or colours or shades, rather than solid blocks of colour, are said to be continuous tone images.

Printing presses used for books, magazines, etc., typically cannot reproduce continuous tone pictures directly since they use only one (black and white) or four (CMYK colour) or occasionally a handful of colours of ink (spot colour, etc). Continuous tone pictures are thus simulated through the use of halftones - dot patterns.

cf. black and white, CMYK, halftone.

Entry last updated 2002-04-03. Term 267 of 1487.

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