Adjusting The Brightness; Adjusting The Contrast - Canon CanoScan FS4000US User Manual

Adjusting Images

Adjusting the Brightness

Adjusting the brightness is effective when the entire image is too bright or dark. You must be careful,
however, not to create excessive highlights or shadows by setting the value to extreme levels.
Brightness = Neutral
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Adjusting the Contrast

2
Contrast is the degree of difference between light and dark areas of the image. Raising the contrast
accentuates the difference between light and dark. Lowering it reduces the difference between the
two.
Contrast = Neutral
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4
Raising the contrast of blurred pictures is effective in adding clarity to the image. Raising the contrast
too high, however, will obscure the dark portions or create excessive highlights.
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Brightness > Neutral
Contrast > Neutral
Brightness < Neutral
Contrast < Neutral