Canon MP980 series On-Screen Manual page 597

Correcting Images (Unsharp Mask, Reduce Dust and Scratches, Fading Co...
Reducing graininess
Set Grain Correction to Low, Medium or High according to the degree of graininess.
None
Correcting backlit images
Set Backlight Correction to Low, Medium or High according to the degree of backlight.
None
Correcting shadows that appear between pages when scanning open booklets
Set Gutter Shadow Correction to Low, Medium or High according to the degree of shadows.
None
Adjusting the film exposure manually
Click of Exposure/Tone Settings.
Select the Manual Exposure checkbox and adjust the exposure within the range of 50% to 200%.
Before
Medium
Medium
Medium
After
Page 597 of 947 pages