Canon PIXMA MG4200 Series On-Screen Manual page 638

Home > Scanning > Scanning from a Computer
(ScanGear) > Correcting Images and Adjusting Colors with ScanGear (Scanner Driver)
Curve
S914
Adjusting Tone Curve
In ScanGear (scanner driver)'s Advanced Mode tab, click
Note
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.
Reading Tone Curves
With ScanGear, scanning images via a scanner is the input, and displaying to a monitor is the output.
"Tone Curve" shows the balance of tone input and output for each Channel.
> Scanning with Application Software that You are Using
(Tone Curve Settings).
> Adjusting Tone