Canon printer PIXMA MG2920 white User Manual

							Correcting Images and Adjusting Colors with ScanGear (Scanner
Driver)
Correcting Images (Unsharp Mask, Reduce Dust and Scratches, Fading
Correction, etc.)
Adjusting Colors Using a Color Pattern
Adjusting Saturation and Color Balance
Adjusting Brightness and Contrast
Adjusting Histogram
Adjusting Tone Curve
Setting Threshold
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							Correcting Images (Unsharp Mask, Reduce Dust and Scratches,Fading Correction, etc.)
The  Image Settings  functions on the  Advanced Mode  tab of ScanGear (scanner driver) allow you to
enhance the outline of the subjects, reduce dust/scratches, and correct faded colors when scanning images.
Setting Items
Click 
 (Arrow) of a function and select an item from the pull-down menu.
Important
•
Do not apply these functions to images without moire, dust/scratches, or faded colors. The color tone
may be adversely affected.
•
Refer to "Image Settings " for details and precautions on each function.
Note
•
Refer to "Scanning in Advanced Mode " to start the Advanced Mode  tab of ScanGear and scan.
Adjusting the image brightness and color tone Set  Image Adjustment  to Auto , Photo , Magazine , or Document  according to the document type.
NoneAuto
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							Reducing show-through in text documents or lightening the base color inrecycled paper, newspapers, etc. when scanning documents
Set  Reduce Show-through  to ON .
OFFON
Sharpening slightly out-of-focus images
Set  Unsharp Mask  to ON .
OFFON
Reducing gradations and stripe patterns
Set  Descreen  to ON .
OFFON
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							Note•
Printed photos and pictures are displayed as a collection of fine dots. "Moire" is a phenomenonwhere uneven gradation or a stripe pattern appears when such photos or pictures printed with fine
dots are scanned.  Descreen is the function for reducing this moire effect.
Reducing dust and scratches Set  Reduce Dust and Scratches  to Low , Medium , or High  according to the degree of dust and
scratches.
NoneMedium
Correcting photos that have faded with time or due to colorcast
Set  Fading Correction  to Low , Medium , or High  according to the degree of fading or colorcast.
NoneMedium
Reducing graininess
Set  Grain Correction  to Low , Medium , or High  according to the degree of graininess.
NoneMedium
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.
NoneMedium
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							Adjusting Colors Using a Color PatternYou can preview color changes and reproduce natural colors by using the color pattern function in
ScanGear (scanner driver)'s  Basic Mode tab.
Color Adjustment
Correct colors that have faded with time or due to colorcast. "Colorcast" is a phenomenon where a
specific color affects the entire picture due to the weather or ambient strong colors.
Click an arrow in  Color Adjustment  to emphasize the corresponding color.
Cyan & red, magenta & green, and yellow & blue are complementary color pairs (each pair produces a
shade of gray when mixed). You can reproduce the natural colors of the scene by reducing the cast color and increasing the complementary color.
It is recommended that you find a portion in the image where it should be white, and adjust the colors sothat the portion turns white.
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							Preview image appears in the center. Preview image colors change as you adjust them.
Below is an example of correcting a bluish image.
Since  Blue and  Green  are too strong, click the  Yellow and Magenta  arrows to correct.
BeforeAfter
Note
•
Color adjustments are applied only to the cropping frames (scan areas) or the frame selected in
thumbnail view.
•
You can select multiple frames or cropping frames by clicking them while pressing the Ctrl key.
•
You can also select a color tone from the color pattern displayed on the left of the  Color Pattern
screen.
•
You can also use this function to add a specific tint to an image. Increase the magenta to add a warm tint, and increase the blue to add a cool tint.
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							Adjusting Saturation and Color BalanceYou can brighten colors that have faded with time or due to colorcast by using 
 (Saturation/Color
Balance) in ScanGear (scanner driver)'s  Advanced Mode tab.
Note
•
Click Defaults  to reset all adjustments in the current window.
Saturation Adjust the image's saturation (vividness). You can brighten colors that have faded with time, etc.
Move 
 (Slider) under  Saturation to the left to decrease the saturation (darken the image), and to the
right to increase the saturation (brighten the image). You can also enter a value (-127 to 127).
Saturation decreasedOriginal imageSaturation increased
Note
•
The natural color tone of the original image may be lost if you increase saturation too much.
Color Balance Adjust images that have a colorcast. "Colorcast" is a phenomenon where a specific color affects the entire
picture due to the weather or ambient strong colors.
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							Move  (Slider) under Color Balance  to the left or right to emphasize the corresponding color.
Cyan & Red
Magenta & Green
Yellow & Blue
These are complementary color pairs (each pair produces a shade of gray when mixed). You can reproduce the natural colors of the scene by reducing the cast color and increasing the complementary color.
It is usually difficult to correct the image completely by adjusting only one color pair. It is recommended
that you find a portion in the image where it should be white, and adjust all three color pairs so that the
portion turns white.
You can also enter a value (-127 to 127). Below is an example of an image in which the "Cyan & Red" pair has been adjusted.Cyan is increasedRed is increased
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							Adjusting Brightness and ContrastYou 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 .
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