Xerox Nuvera, Руководство пользователя

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Figure 13: A high-contrast image. Gray levels are being spread out across the entire histogram.
On the other hand, decreasing contrast too much causes a loss of highlights and shadows. Instead of
highlight content turning completely white and shadow content turning completely black, highlights
and shadows get "compressed" into the midtone region of the histogram (see Figure 2).
Figure 14: A low-contrast image. Gray levels are compressed into midtones, and there is a loss of highlight and
shadow, as evidenced in the histogram.
For details on working with the contrast control, see Adjusting Contrast (when scanning or copying) .
Note
Often, increased contrast will tend to make pictorials appear sharper. It is recommended that the
sharpness control be used to adjust sharpness because it increases the sharpness of edges without
having the macro tonal changes of the contrast control.
Adjusting Contrast (when scanning or copying)
There are seven contrast levels which control the appearance of fine detail in the final output image.
The solution to getting the image to look good, without creating image quality problems, is to increase
or decrease contrast in small increments. See
About Contrast .
To adjust contrast
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 slider right or left to increase or decrease (respectively) the amount of contrast.
Tip
It is best to proof a job when you make image quality adjustments.
Xerox ® Nuvera ® 14-30
User Guide and Training Aid (UGTA)
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