background image

• Brightness: 

This is for B/W mode only.

The brightness value ranges 

from -100% to 100%.  It changes the highlight value of an image when
scanning in B/W mode.

• Contrast: Again the contrast value ranges from -100% to 100%.
• Gamma: The gamma value ranges from 0.1 to 9.9.  It defines the mid-tone 

point of an image.  It is recommended to set the value to 1.0 or larger to 
make the image brighter.

• Highlight: The highlight value ranges from 1 to 255.  It defines the white

point of an image.  You can reduce the value to make the image lighter or
increase the value to make it darker.

• Shadow: The shadow value ranges from 0 to 254.  It defines the black 

point of an image. You can reduce the value to make the image darker or
increase the value to make it lighter.

Note: It is recommended to set the shadow value lower than the high

light value.

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Information Window

Useful information related to the Attaché and TWAIN driver software can
be found in this window.

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