Acer Film Scanner - Manual (Page 37)

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Brightness/Contrast button
Click this button to bring up the Brightness/Contrast Dialog
box:
You can adjust the overall brightness
and contrast of the image either
manually or automatically in this dialog
box. To adjust the brightness and
contrast more precisely, use the Curve
and Level tools which will be described
later.
Brightness control
You can drag the triangle below the bar to
increase/decrease the overall brightness of the
image, or click on the Auto button to let
MiraPhoto adjust the brightness automatically.
Contrast control
You can drag the triangle below the bar to
increase/decrease the overall contrast of the
image, or click on the Auto button to let
MiraPhoto adjust the contrast automatically.
When you have finished with adjustments, click on the OK button to
confirm your settings and close the dialog box. If you are not satisfied
with the adjustments, you can click on the Reset button and the
settings will return to the default, or click on the Cancel button to
cancel and close the dialog box.