Applying Scanning Filters - Epson Expression 800 User Manual

Filters are only
available when you
select a color or
grayscale scan type.
Scanning is slower
when you use
Descreening because
of the computations
required to process
the image.
Adjusting Image Quality

Applying Scanning Filters

SilverFast Lite can automatically adjust an image based on the type of
original scanned. These automatic adjustments are called filters.
From the Filter list, choose None or one of the following filters:
Sharpen
Descreening
Automatically sharpens an image (makes it less
blurry) by increasing the contrast between adjacent
pixels. Sharpen is useful primarily for photographs
and grayscale images. Be sure to adjust the size of
your image before using the Sharpen filter.
Counters the effect of the screen process on your
image and turns the dots into a smoother pattern.
Descreening is useful for scanning photographs
and illustrations printed in newspapers or
magazines to improve lost resolution or sharpness.
If you use Descreening, don't enlarge the image as
this could cause a moiré effect (strange patterns
that appear in an image due to the spacing
between the bands of dots).
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