Epson Expression 800 User Manual - TWAIN - Page 41

Advanced Scanning, Image Controls, Image Controls settings, Description, Highlight, Shadow

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The Image Controls settings are described in the table below. Image Controls settings Exposure Gamma Highlight Shadow Threshold* Description Select the intensity of light in the image as determined by a combination of the Highlight and Shadow settings from -10 (darkest) to 20 (brightest) Select the amount of contrast in your image from 50 (lowest) to 500 (highest) Select the amount of detail visible in the brightest areas of the image from 61 (lightest) to 490 (darkest) Select the amount of detail visible in the darkest areas of your image from 0 (lightest) to 60 (darkest) Select the point at which the gray areas in the image are scanned as either black or white from 0 (darkest) to 255 (lightest) * The Threshold setting is available only when the Pixel Depth setting is set to Black & White and the Halftone setting is set to None. When the Threshold setting is active, the rest of the Image Controls are not available. Advanced Scanning Page 41

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Advanced Scanning
Page 41
The
Image Controls
settings are described in the table below.
*
The Threshold setting is available only when the Pixel Depth setting is set to
Black & White
and the Halftone setting is set to
None
. When the Threshold
setting is active, the rest of the Image Controls are not available.
Image Controls settings
Description
Exposure
Select the intensity of light in the image as
determined by a combination of the
Highlight
and
Shadow
settings from –10
(darkest) to 20 (brightest)
Gamma
Select the amount of contrast in your
image from 50 (lowest) to 500 (highest)
Highlight
Select the amount of detail visible in
the brightest areas of the image from 61
(lightest) to 490 (darkest)
Shadow
Select the amount of detail visible in
the darkest areas of your image from 0
(lightest) to 60 (darkest)
Threshold*
Select the point at which the gray areas in
the image are scanned as either black or
white from 0 (darkest) to 255 (lightest)