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Manual
Exposure
B.3.3
The
Exposure
screen allows selecting the functions
Black Cut
and
Auto
.
Fixed
switches the function off.
Picture 25: Exposure Modes
When
Black Cut
or
Auto
is selected a numeric key pad opens.
Picture 26: Numeric key pad to set threshold value
Black Cut
0 (zero) to 100
Sets the threshold for
black
. All pixel values found in the image below
the selected value are set to solid black.
Result: The image contrast is improved.
Auto
0 (zero) to 100
Sets the threshold for
black
and activates the
automatic exposure
control.
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.
