Kodak 2500D User Guide - Page 24

Gamma Lamp Length Control The Gamma option allows you to define the gamma curve setting for normal scanning and computer screen viewing. Choose one of the five gamma curves in the Gamma drop-down list box. There are standard and CRT levels in a gamma curve. If you intend to view the scanned images on a computer screen, select "CRT." When "User Download" is selected, you must specify a gamma pattern (*.PXG file). Click on the Gamma button in the Download From File group box and select a gamma pattern in the file selection box. A gamma setting can be specified only when a Dither pattern, an Error Diffusion pattern for Binary mode, or a Grayscale mode is selected. Select "Red" in the Lamp box to allow the scanner to perform red dropout color. The green lamp is the normal setting. When red dropout is specified, most red characters, lines, or illustrations will not be captured when a document is scanned. NOTE: This feature is available only on the Scanner 2500. When Length Control is selected, the scanned image length is automatically determined. Different length documents will be detected and scanned accordingly, thereby conserving memory. By using Length Control, the scanner does not use excessive memory. For example, if you are simultaneously scanning A4 and A5 size documents, and the A5 size is in a horizontal position and Length Control is off, the A5 horizontal document will be scanned as A4 size. The bottom half of the paper will become a black image. If Length Control is on, the A5 horizontal document is scanned as horizontal A5. A5 Landscape A5 Landscape A5 Landscape Document Length Control off Length Control on A-63055 December 1999 18