Adjusting Brightness and Contrast
In ScanGear (scanner driver)'s Advanced Mode tab, click (Brightness/Contrast).
Note:
Channel
Each dot of an image is a mixture of Red, Green, and Blue in various proportions (gradation). These colors can be adjusted individually as a "channel."
Master
Adjust the Red, Green, and Blue combined.
Red
Adjust the Red channel.
Green
Adjust the Green channel.
Blue
Adjust the Blue channel.
Note: Brightness
Adjust the image brightness. Move (Slider) under Brightness to the left to darken and right to brighten the image. You can also enter a value (-127 to 127).
Darkened | Original image | Brightened |
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Note: Contrast
"Contrast" is the degree of difference between the brighter and darker parts of an image. Increasing contrast will increase the difference, thus sharpening the image. Decreasing contrast will decrease the difference, thus softening the image.
Move (Slider) under Contrast to the left to decrease and right to increase the contrast of the image. You can also enter a value (-127 to 127).
Decreased contrast | Original image | Increased contrast |
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Note