Epson 1200S - Manual (Page 43)

Advanced Scanning Page 43
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* Description
Exposure Sets 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 Sets the amount of contrast in your image from
50 (lowest) to 500 (highest)
Highlight Sets the amount of detail visible in the brightest
areas of the image from 61 (lightest) to 490 (darkest)
Shadow Sets the amount of detail visible in the darkest areas
of your image from 0 (lightest) to 60 (darkest)
Threshold Sets the point at which the gray image areas are
scanned as either black or white from 0 (lightest) to
255 (darkest)