Procedures Common To All Image Adjustment Modes - Canon CanoScan FS4000US User Manual

Adjusting Images

Procedures Common to All Image Adjustment Modes

This topic introduces the procedures that are common to all image adjustment modes.
Channel Selection Panel
The color of each dot comprising the scanned image is expressed as a mixture of varying gradations
of red (R), green (G) and blue (B). The settings for each of these colors, which are referred to as
channels, can be adjusted individually or together via the master channel.
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Channels are only displayed with the histogram and tone curve modes. Moreover, the red, green and
blue channels are all grayed out and cannot be selected when the color mode has been set to either
of the grayscale modes.
Sliders and Input Boxes
You can adjust or set a setting by dragging the slider tab left or right. The value in the input box will
change accordingly. You may also input a value directly into the box. In this case the slider will
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change accordingly.
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Master Channel
Adjusts or sets all three colors at once.
Red Channel
Adjusts or sets only the red elements of the image.
Green Channel
Adjusts or sets only the green elements of the image.
Blue Channel
Adjusts or sets only the blue elements of the image.
Slider Tab Input Box