Motion Blur
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This filter simulates the effect you seen when you take a photograph of a moving object at a slow shutter speed: the object is 'smeared' in the direction of movement.

Three different types of blur are available:

Linear
     This simulates what happens when the camera is moved along a straight line. You can choose the angle (where the line points) and the amount of displacement (how long the line is).

Radial
     Here, the camera is rotated about the center of the image (or the selection, if one is present). You can choose the angle (how much the camera is rotated). The length parameter is ignored.

Zoom
     Imagine that you use a zoom lens and change the zoom facture during exposure. You can choose the number of steps computed (the angle is ignored).

This plug-in cannot operate on indexed images.