Canon Pixma Mp550 User Guide

Advanced Guide > Scanning > Scanning with Other Application Software > Correcting Images and Adjusting Colors with
ScanGear (Scanner Driver)
 > Adjusting Brightness and Contrast
Adjusting Brightness and Contrast
In ScanGears Advanced Mode tab, click  (Brightness/Contrast).
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 wi ndow.
Channel
Each dot of an image is a mixture of Red, Green and Blue in...

Note
Only Grayscale will be displayed in Channel when Color Mode is Grayscale.
Brightness
Adjust the image brightness. Move  (slider) under Brightness to the left to darken and right to brighten
the image. You can also enter a value (-127 to 127) .
DarkenedOriginal imageBrightened
Note
Highlights may be lost if you brighten the image too much, and shadows may be lost if you darken
the image too much.
Contrast
Contrast is the degree of difference between the  brighter and darker parts of an image....

Advanced Guide > Scanning > Scanning with Other Application Software > Correcting Images and Adjusting Colors with
ScanGear (Scanner Driver) > Adjusting Histogram
Adjusting Histogram
In ScanGears Advanced Mode tab, click  (Histogram).
Note
Click Defaults to reset all adjustments in the current wi ndow.
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....

(1) Bright area(2) Dark area(3) W hole image
More data is distributed to the
highlight side.
More data is distributed to the 
shadow side.Data is widely distributed between the
highlight and shadow.
Adjusting Histograms (Using the Slider)
Select a Channel, then move  (Black-point Slider) or  (W hite-point Slider) to specify the level to be
set as the shadow or highlight.
- All parts to the left of  (Black-point Slider) will be black (level 0).
- The parts at 
 (Mid-point Slider) will turn to the color...

Moving the Mid-point Slider 
Move the Mid-point Slider to specify the level to be set as the middle of the tonal range.
Images with more data distributed to the highlight  side
Move the Mid-point Slider toward the highlight side .
Images with more data distributed to the shadow sid e
Move the Mid-point Slider toward the shadow side.
Adjusting Histograms (Using the Droppers)
W hen you select a Channel and click the Black-point , Mid-point or W hite-point Dropper, the mouse
pointer on the preview image...

Advanced Guide > Scanning > Scanning with Other Application Software > Correcting Images and Adjusting Colors with
ScanGear (Scanner Driver)
 > Adjusting Tone Curve
Adjusting Tone Curve
In ScanGears Advanced Mode tab, click  (Tone Curve Settings).
Note
Click Defaults to reset all adjustments in the current wi ndow.
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...

Adjusting Tone Curve
In Select Tone Curve, select a tone curve from No correction, Overexposure, Underexposure, High
contrast, Reverse the negative/positive image and E dit custom curve.
No correction (No adjustment)
Overexposure (Convex curve) 
The midtone data of the input side is stretched tow ard the highlight of the output side, resulting in a
bright-toned image when viewed on a monitor.
Underexposure (Concave curve) 
The midtone data of the input side is stretched tow ard the shadow of the output...

Edit custom curve 
You can drag specific points on the Tone Curve to freely adjust the brightness of the corresponding
areas.
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Adjusting Tone Curve
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Advanced Guide > Scanning > Scanning with Other Application Software > Correcting Images and Adjusting Colors with
ScanGear (Scanner Driver) > Setting Threshold
Setting Threshold
The brightness of color and grayscale images is exp ressed in a value between 0 and 255. However, in
creating black and white images, all colors are mapped t o either black (0) or white (255). Threshold is
the borderline value that determines a color as bla ck or white. By adjusting the threshold level, you can
sharpen text in a...

Advanced Guide > Scanning > Scanning with Other Application Software > ScanGear (Scanner Driver) Screens
ScanGear (Scanner Driver) Screens
The following sections describe ScanGears screens and functions, and how to use ScanGear (scanner
driver).
Basic Mode Tab
Advanced Mode Tab
Input Settings
Output Settings
Image Settings
Color Adjustment Buttons
Auto Scan Mode Tab
Preferences Dialog Box
Scanner Tab
Preview Tab
Scan Tab
Color Settings Tab
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Page 620 of 877 pages
ScanGear (Scanner Driver) Screens...