7 - 26 USING YOUR MACHINE WITH A MACINTOSH®
Adjusting the Image
Brightness
Adjust the Brightness setting to get the best image. The Brot her
TWAIN Scanner driver offers 100 Brightness l evels (-50 to 50). The
default value is 0, represe nting an ‘average’ setting.
You can set the Brightness level by dragging the slide bar to the
right to lighten the image or to the left to dar ken the image. You can
also type a value in the box to set the level. Click OK.
If the scanned image is too light, set a lower Brightness level and
scan the image again.
If the image is too dark, set a higher Brightness level and scan the
image again.
Contrast
You can only adjust the Contrast level when you have selected one
of the Gray Scale setti ngs, it is not availab le when you have select ed
Black & White as the selected Color Type.
Increasing the Contrast level (by dragging the slide bar to the right)
emphasizes dark and light areas of the image, while reducing the
Contrast level (by dragging the slide bar to the left) reveals mo re
detail in the gray areas. Instead of using the slide bar, you can type
a value in the box to set the Contrast. Click OK.