Canon PIXMA MG6821 User Manual - Page 730
Adjusting Brightness and Contrast
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Adjusting Brightness and Contrast You can adjust images that are too dark or bright, or too flat due to lack of contrast by using (Brightness/Contrast) in ScanGear (scanner driver)'s Advanced Mode tab. Note • Click (Down arrow) to switch to detailed view. Click (Up arrow) to return to the previous view. • Click Defaults to reset all adjustments in the current window. 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 • Only Grayscale will be displayed in Channel when Color Mode is Grayscale. 730