The BCC Radial Blur ﬁlter creates a blur around a speciﬁc point,
simulating the effect of a zooming or rotating camera.
The Amount option speciﬁes the amount of blur, depending on the selection for
Type. For a Spin blur, which applies blurs in circles around the center point,
the Amount value indicates the degree of rotation. For a Zoom blur, which
applies blur that radiates out from the center point, the Amount value
speciﬁes the degree of radial blurring.
The built in PixelChooser, with integrated mocha planar tracking allows for
greater control over which areas of the image the ﬁlter should affect.