Epson GT-20000N Pro User Manual page 44

Histogram Provides a graphical interface for adjusting highlight, shadow, and
gamma levels individually. For advanced users only.
Click the
setting.
Tone Correction Provides a graphical interface for adjusting tone levels individually.
For advanced users only.
Click the
setting.
Brightness Adjusts the overall image lightness and darkness.
If you selected an Image Type setting other than Halftone, click the
Contrast Adjusts the difference between the light and dark areas of the
overall image.
If you selected an Image Type setting other than Halftone, click the
Saturation Adjusts the density of colors in the overall image.
Click the
setting.
Color Balance Adjusts the balance of red, green, and blue colors in the overall
image.
Click the
settings.
Color Palette Provides a graphical interface for adjusting mid-tone levels, such as
skin tones, without affecting the highlight and shadow areas of the
image. For advanced users only.
Click the
See "Using the Color Palette Feature (for Professional Mode Only)"
on page 52 for instructions.
Threshold Adjusts the level at which the black areas in text and line art are
delineated, improving text recognition in OCR programs.
(Available only when you select Black & White as the Image Type
setting.)
Note:
❏ To view red, green, and blue levels at particular points in your preview image as you make
adjustments, click the
an image area. See Epson Scan Help for details.
❏ Certain settings may not be available, or may be automatically selected, depending on the type
of image you are previewing and other settings you have selected.
❏ You can customize how certain Epson Scan settings behave by clicking Configuration and
changing settings in the window that appears. See Epson Scan Help for details.
❏ To undo any image quality adjustments you make to the preview image, click Reset if available,
turn off the setting, or preview your image again.
Histogram Adjustment icon to access the Histogram
Tone Correction icon to access the Tone Correction
Image Adjustment icon to access the Brightness setting.
Image Adjustment icon to access the Contrast setting.
Image Adjustment icon to access the Saturation
Image Adjustment icon to access the Color Balance
Color Palette icon to use the Color Palette settings.
densitometer icon in the Preview window and move your cursor over
GT-20000 User's Guide
Scanning Your Originals
44