Canon Pixma Mp540 User Guide
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Advanced Guide > Scanning > Scanning with Other Application Software > Correcting Images and Adjusting Colors with ScanGear (Scanner Driver) > Correcting Images (Unsharp Mask, Reduce Dust and Scratches, Fading Correction, etc.) Correcting Images (Unsharp Mask, Reduce Dust and Scratches, Fading Correction, etc.) The Image Settings functions in Advanced Mode 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 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. See the section below for details and precautions on each function. Image Settings Note See the section below to start ScanGear (scanner driver) in Advanced Mode and scan. Scanning in Advanced Mode Adjusting the image brightness and color tone Set Auto Tone to ON. OFFON Page 521 of 758 pages Correcting Images (Unsharp Mask, Reduce Dust and Scratches, Fading Co...
Sharpening slightly out-of-focus images Set Unsharp Mask to ON. OFFON Reducing gradations and stripe patterns Set Descreen to ON. OFFON Note Moire is an uneven gradation or stripe pattern that appears in parts of a scanned image where the dots have interfered with each other. 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 Page 522 of 758 pages 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. NoneMedium Correcting backlit images Set Backlight Correction to Low, Medium or High according to the degree of backlight. 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 Page top Page 523 of 758 pages Correcting Images (Unsharp Mask, Reduce Dust and Scratches, Fading Co...
Advanced Guide > Scanning > Scanning with Other Application Software > Correcting Images and Adjusting Colors with ScanGear (Scanner Driver) > Adjusting Colors Using a Color Pattern Adjusting Colors Using a Color Pattern You can preview color changes and reproduce natural colors by using the Color Pattern function in ScanGears Basic Mode. 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 so that the portion turns white. Preview image appears in the center. Preview image colors change as you adjust them. Page 524 of 758 pages Adjusting Colors Using a Color Pattern
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 scan area (cropping frame) specified in the Preview area. 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. Page top Page 525 of 758 pages Adjusting Colors Using a Color Pattern
Advanced Guide > Scanning > Scanning with Other Application Software > Correcting Images and Adjusting Colors with ScanGear (Scanner Driver) > Adjusting Saturation and Color Balance Adjusting Saturation and Color Balance In ScanGears Advanced Mode, click (Saturation/Color Balance). Saturation Adjust the images saturation (vividness). You can brighten colors that have faded with time, etc. Move (slider) under Saturation to the left to reduce 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. Move (slider) under each color pair 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. Page 526 of 758 pages Adjusting Saturation and Color Balance
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 Note Click Defaults to reset all adjustments in the current window. Page top Page 527 of 758 pages Adjusting Saturation and Color Balance
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, click (Brightness/Contrast). Note Click to switch to detailed view. Click to return to the previous view. 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. 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). Page 528 of 758 pages Adjusting Brightness and Contrast
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. Increasing contrast will increase the difference, thus sharpening the image. Decreasing contrast will decrease the difference, thus softening the image. Move (slider) under Contrast to the left to decrease and right to increase the contrast of the image. You can also enter a value (-127 to 127). Decreased contrastOriginal imageIncreased contrast Note Increasing the contrast is effective in adding a three-dimensional feel to soft images. However, shadows and highlights may be lost if you increase the contrast too much. Note Click Defaults to reset all adjustments in the current window. Page top Page 529 of 758 pages Adjusting Brightness and Contrast
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, click (Histogram). 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 Histograms You can open Histogram of a specified area for each Channel. The higher the Histogram peak, the more data is distributed to that level. (1) Bright area(2) Dark area(3) Whole image Page 530 of 758 pages Adjusting Histogram