Descreen and Unsharp Mask will be found on the Settings tab of ScanGear in Advanced Mode.
To access these functions:
- Open ScanGear from the desired application (ex.- Toolbox, PhotoStudio, etc.).
- If not already in Advanced Mode, click on the 'Advanced Mode' button.
- In the Image Settings section, set the 'Descreen' and 'Unsharp Mask' options as desired.
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Descreen
Set the [Descreen] function to ON when you are scanning photos or pictures from print publications, such as books or magazines.
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This function is disabled when the Color Mode category is set to Black and White or Text Enhanced (Windows only). |
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Photos and pictures in books and magazines are reproduced as collections of fine dots. If they are scanned without descreening, interference between dots takes place and dark stripes or patterns, called moire, appear on the image.
The Descreen function reduces this effect. |
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Moire patterns may appear on scans of digital prints. |
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If the Unsharp Mask function is turned on, some moire may persist even if the Descreen function is turned on. Under these circumstances, turn the Unsharp Mask function off. |
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The Descreen function is disabled when the "Scan without using ScanGear's Window" option is selected in the Preferences settings. However, if CanoScan Toolbox is used to scan without opening ScanGear CS, the Descreen function is activated when the scan mode is set to Color (Magazine). |
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Unsharp Mask
Set the [Unsharp Mask] function to ON to sharpen outlines in an image.
This function is effective when an image's focus is fuzzy. It enhances the crispness of the overall image.
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This function is disabled when the Color Mode category is set to Black and White or Text Enhanced (Windows only). |
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You are recommended to turn the Unsharp Mask function off when the required degree of moire is not being reduced even with the Descreen function turned on. |
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