Canon PRO-10 Series Manual page 693

Adjusting the Color Balance by Looking at Patterns (Print Studio Pro)
Note
Move the slider to the right to emphasize and left to weaken the color tone.
You can also set by entering a value directly into the text input box.
3.
Adjust Brightness and Contrast.
Important
If the result of printing after adjusting the brightness/contrast is different from what is displayed in
print preview, perform Pattern Print and adjust the color again, using the pattern as a reference.
Adjusting the Brightness/Contrast by Looking at Patterns (Print Studio Pro)
Note
For Brightness, move the slider to the right to brighten and left to darken.
For Contrast, move the slider to the right to increase and left to decrease the contrast.
You can also set by entering a value directly into the text input box.
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