QMS Magicolor WX User Manual page 68

Purpose Adjusts images that are too dark.
Choices Unchecked—Does not adjust image.
Checked—Lightens the colors in the image.
Default Unchecked
Notes Adjusting for overexposure can restore details lost due to a
lack of contrast.
Purpose Sets image to positive or negative.
Choices Unchecked—Does not adjust Image.
Checked—Inverts the colors in the image.
Default Unchecked
Notes Setting the image to negative inverts the colors in the image.
Black Ref. and White Ref. work together.
Purpose Sets the range between the darkest and lightest reference
points in the image.
Range Black Ref.—0.000 (less black) to 0.400 (more black)
White Ref.—0.600 (more white) to 1.000 (less white)
Default Black Ref.—0.000
White Ref.—1.000
Notes Increasing the value of the black reference point and
decreasing the value of the white reference point increases
contrast but narrows the range of midtones.