Adobe After Effects CS4 - Manual (Page 448)

442 USING AFTER EFFECTS CS4
Effects and animation presets
Last updated 12/21/2009
Original (upper-left), blur layer (lower-left), and result (lower-right)
Maximum Blur The maximum amount, in pixels, that any part of the affected layer can be blurred.
Stretch Map To Fit Stretches the control layer to the dimensions of the layer to which it is applied; otherwise, the
control layer is centered on the effect layer.
Steve Holmes provides a video tutorial on the Artbeats website that demonstrates the use of the Compound Blur effect.
More Help topics
“ About Blur & Sharpen effects ” on page 440
“ Compound effects and control layers ” on page 391
Directional Blur effect
The Directional Blur effect gives a layer the illusion of motion.
Andrew Kramer provides a video tutorial on his Video Copilot website in which he demonstrates the use of the
Directional Blur effect to make a gun slide look as if it is moving quickly.
This effect works with 8-bpc, 16-bpc, and 32-bpc color.
Original (left), and with effect applied (right)
Direction The direction of the blur. The blur is applied equally on either side of the center of a pixel; therefore, a setting
of 180° and a setting of 0° produce the same results.
More Help topics
“ About Blur & Sharpen effects ” on page 440