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- Macintosh 21" Color Display: Adjustable Color Temperature
-
- Article Created: 1 October 1991
- Article Last Reviewed:
- Article Last Updated:
-
- TOPIC ------------------------------------------------------------
-
- This article explains the adjustable white point color temperature feature
- of the Macintosh 21-inch Color Display.
-
- DISCUSSION -------------------------------------------------------
-
- The white point color temperature is a measure, in degrees Kelvin, of how
- white a display's white is. Traditional displays use a 9300 degree K
- white, which has a bluish tint to it and a high contrast. A 6500 degree
- Kelvin white is similar to page white and is more useful for color
- matching.
-
- This feature is important to graphics professionals, although other users
- will appreciate having the choice. With it, users can more closely match
- the color of an object designed on a computer with how it looks when
- printed by a commercial printer. The page-white gamma table provides 6500
- degrees K white point, which matches the color of white paper. This
- improves WYSIWYG in graphic design, since the white backgrounds of the
- monitor and paper are the same.
-
- The Macintosh 21-inch Color Display allows adjustment of the white point
- color temperature. To make an adjustment, follow these steps:
-
- 1) Select the monitor CDEV in the Control Panel. (In System 7, open the
- Monitors control panel.)
-
- 2) Hold down the Option key and click on the Option button.
-
- 3) The options dialog offers a choice of gamma tables. Choose:
- - the Mac Std Gamma option for 9300 degree K,
- - the Page-White Gamma option for 6500 degree K white, or
- - uncorrected gamma.
-
-
- Copyright 1991, Apple Computer, Inc.
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-