About Sharpness; Sharpness Control; Adjusting Sharpness (When Scanning Or Copying) - Xerox Nuvera User Manual

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About Sharpness

A sharp image has clean, crisp edges. Sharpness effects local areas which transition quickly from light
to dark tones such as the edge of a building against the sky or the edge of a line against a white
background. When these transitions occur over a few pixels (1-2), the image appears sharp. When the
transition occurs over several pixels (3-10 or more), the image appears fuzzy or blurred.

Sharpness control

Sharpening re-establishes clear difference between adjacent pixels (see right half of figure).
The sharpness control is particularly useful in enhancing pencil lines or supporting suppressing paste up
lines. Generally, text looks better with more enhancement, while pictorials only require moderate
enhancement.
However, (the right half of the figure 1), while the right half is not as blurry as the left half, too much
sharpening has made the image look grainy, and has caused the girl's complexion to become uneven,
or mottled.
For details on working with the sharpness control, see Adjusting Sharpness (when scanning or copying).
Tip
Extremely high levels of sharpness tend to cause 'ringing' on edges which gives the image an artificial
appearance. Depending on the application, some designers use this method to create a 'better than
original, very sharp focal point in the document.
Tip
Extremely high levels of sharpness may amplify moire. see Suggestions for removing moiré patterns:.

Adjusting Sharpness (when scanning or copying)

There are seven sharpness levels which control the appearance of fine detail in scanned images and
copy jobs.
The solution to getting the image to look good, without creating image quality problems, is to increase
or decrease sharpness in small increments.
To adjust sharpness
1. In the Xerox Nuvera user interface, click the Copy button.
2. Click the Image Quality tab.
3. Click the Image Adjustments button.
4. Move the Sharpness slider right or left to increase or decrease (respectively) the amount of sharpness.
Xerox ® Nuvera ® 14-33
User Guide and Training Aid (UGTA)