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<h3 class="title"><a id="filters-blur-mblur"></a>2.5. Motion Blur</h3>
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<p>
This filter is found in
<span class="guimenuitem">Image>Filters/Blur/<span class="accel">M</span>otion Blur</span>
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<p>
The Motion Blur filter creates a movement blur. The filter is capable
of Linear, Radial, and Zoom movements. Each of these movements can be
further adjusted, with Length, or Angle settings available.
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<h4 class="title"><a id="id3356708"></a>Options</h4>
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<span class="term">Blur Type</span>
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<p>
<span class="guilabel">Linear</span> motion is a blur that travels in a
single direction, horizontally, for example. In this case,
Length means as Radius in other filters:it represents the blur
intensity. More Length will result in more blurring. Angle
describes the actual angle of the movement. Thus, a setting of
90 will produce a vertical blur, and a setting of 0 will
produce a horizontal blur.
</p>
<p>
<span class="guilabel">Radial</span> motion blur creates a circular
blur. The Length slider is not important with this type of
blur. Angle on the other hand, is the primary setting that will
affect the blur. More Angle will result in more blurring in a
circular direction. The Radial motion blur is similar to the
effect of a spinning object. The center of the spin in this
case, is the center of the image.
</p>
<p>
<span class="guilabel">Zoom</span> blurring produces a blur that
radiates out from the center of the image. The center of the
image remains relatively calm, whilst the outer areas become
blurred toward the center. This filter option produces a
perceived forward movement, into the image. Length is the main
setting here, and affects the amount of speed, as it were,
toward the center of the image.
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<span class="term">Blur settings</span>
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<span class="guilabel">Length</span>: This slider controls the distance
pixels are moved (0 - 256)
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<span class="guilabel">Angle</span>: (0 - 360) As seen above, Angle
slider effect depends on Blur type.
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