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Select the pictures you want to work with.
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On the Formattingtoolbar, click Edit Pictures.
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In the Edit Pictures task pane, under Edit using these tools, click Brightness and contrast.
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Do one of the following:
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To automatically correct the brightness levels of the picture, under Correct brightness automatically, click Auto Brightness.
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To manually adjust brightness, move the Brightness slider or enter a number in the box next to the slider.
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To manually adjust contrast, move the Contrast slider or enter a number in the box next to the slider.
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To manually adjust midtones, move the Midtones slider or enter a number in the box next to the slider.
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To manually adjust highlights, click More next to Advanced Settings, and then move the Highlight slider or enter a number in the box next to the slider.
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To manually adjust shadows, click More next to Advanced Settings, and then move the Shadow slider or enter a number in the box next to the slider.
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Note: You can undo an edit by clicking the corresponding Undo command on the Edit menu. The edits to the pictures will not be saved until you explicitly save them.
