Canon CanoScan N670U CanoScan N670U/N676U/N1240U ScanGear CS-U 6.2 for Win/Mac - Page 35

Descreen, Unsharp Mask, Click this check box to switch the Unsharp Mask feature on and off.

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chapter 3 What is on the Screen? Contents Troubleshooting Glossary Index Descreen Click this check box if you want ScanGear CS-U to conduct moiré reduction to improve the overall image quality. Moiré are dot patterns that interfere with processing images for professional use and are usually caused by poor dithering resulting from scanning images from newspapers, books, magazines, etc. • When the image would not be improved with Descreen, try to switch the Unsharp Mask function Note off. • The effect by Descreen will not show in the Preview area. Unsharp Mask Click this check box to switch the Unsharp Mask feature on and off. Sharpens an image, such as a photograph that is slightly out of focus, by emphasizing the contrast to make outlines clearer. 35

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35
chapter 3
What is on the
Screen?
Troubleshooting
Glossary
Contents
Index
Descreen
Click this check box if you want ScanGear CS-U to conduct moiré reduction
to improve the overall image quality. Moiré are dot patterns that interfere
with processing images for professional use and are usually caused by poor
dithering resulting from scanning images from newspapers, books,
magazines, etc.
•
When the image would not be improved with
Descreen, try to switch the Unsharp Mask function
off.
•
The effect by Descreen will not show in the Preview
area.
Unsharp Mask
Click this check box to switch the Unsharp Mask feature on and off.
Sharpens an image, such as a photograph that is slightly out of focus, by
emphasizing the contrast to make outlines clearer.
Note