B.3.6 Exposure - Image Access WideTek 36C Manual

B.3.6 Exposure
The Exposure screen allows selecting the functions Black Cut and Auto.
Fixed switches the function off.
When Black Cut or Auto is selected a numeric key pad opens.
Picture 26: Numeric key pad to set threshold value
Black Cut Sets the threshold for black. All pixel values found in the image below
the selected value are set to solid black.
0 (zero) to 100
Result: The image contrast is improved.
Auto Sets the threshold for black and activates the automatic exposure
control.
0 (zero) to 100
This function analyzes the image and detects the brightest and the
darkest area. The detected brightness range is expanded to the
maximum range of the scanner. Otherwise all values below the
threshold are defined as "black".
Result: Automatic contrast control and the image contrast is improved.
To set a new value, touch in the line of the displayed value and erase the value with the
DEL button.
Enter the new value with the key pad and touch Send to send the new value.
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Picture 25: Exposure Modes
Manual