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<th colspan="3" align="center">3.5.4. Brightness-Contrast tool</th>
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<h4 class="title"><a id="gimp-tool-brightness-contrast"></a>3.5.4. Brightness-Contrast tool</h4>
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<img src="../images/toolbox/tools-brightness.png" />
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The Brightness-Contrast tool adjusts the brightness and contrast levels
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for the active layer or selection. Levels and Curve tools are more
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<h5 class="title"><a id="id2957143"></a>Activate Tool</h5>
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The Brightness-Contrast Tool can be called from the image-menu:
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<span class="guimenuitem"><span class="accel">T</span>ools</span>/
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<span class="guimenuitem"><span class="accel">C</span>olor
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Tools</span>/<span class="guimenuitem">B<span class="accel">r</span>ightness-Contrast
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<div class="simplesect" lang="en" xml:lang="en">
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<div class="titlepage">
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<div class="variablelist">
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<span class="term">Brightness</span>
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This slider sets a negative (to darken) or positive (to brighten) value for the brightness,
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decreasing or increasing bright tones.
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<span class="term">Contrast</span>
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This slider sets a negative (to decrease) or positive (to
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increase) value for the contrast.
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<span class="term">Preview</span>
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The Preview checkbox makes all changes to the brightness and contrast dynamically so
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that the new level settings can be viewed immediately.
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<td width="40%" align="right" valign="top"> 3.5.5. Threshold Tool</td>