Brightness And Contrast Tool - Microtek ArtixScan 4500t Reference Manual

Brightness and Contrast tool

The Brightness & Contrast tool lets you control the brightness and contrast
levels of the entire image. Increasing the brightness makes all tones in the image
lighter. Contrast, on the other hand, is the range between the darkest and
lightest shades in the image, and increasing the contrast makes greater
separation between the darkest and lightest areas of the image.
Note: Individual channel adjustments for brightness and contrast are not
supported. For RGB color images, the same effect applies to all channels. For
Lab color images, brightness and contrast applies only to the L (Lightness)
channel.
• Brightness: The Brightness control lets you change the brightness setting. Too
• Contrast: The Contrast control lets you change the contrast setting. Too
110 Microtek ScanWizard Pro for Macintosh
much brightness can make an image look washed out, while very low
brightness levels can make an image look very dark.
much contrast can make an image look like a photocopy of a picture with
little or no gray shades. Too little contrast can make an image look dull and
flat.
(Native Color Mode only)
Drag the sliders
to change the
Brightness and
Contrast