Game Development Reference
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that are animated, the same way a camera's lens might shift. This
effect cannot be created with the Compound Blur effect.
There are many other options for fi ne tuning your virtual cam-
era here. Consult the After Effects help documentation for all
the little details. One of the most important properties is Noise
Amount. The Lens Blur effect gives you the ability to add noise
and adjust the iris of the virtual camera for compositing pur-
poses. If you are trying to match the camera settings in another
piece of footage, these Lens Blur settings can also assist you in
that regard.
The Radial Blur Effect
The Radial Blur effect is one of my favorites. It can take boring
textures and make them spring to life. This effect also functions
similarly to the fi lter of the same name in Photoshop.
The Radial Blur effect has two very distinct blur modes: Spin
and Zoom. Let's look fi rst at the default Spin blur. Open up the
Radial Blur.aep project from the Chapter 4 folder. This project
contains a pattern I created using Fractal Noise (Chapter 11), the
Levels effect (Chapter 6), and Glow (Chapter 17) (Fig. 4.55).
Apply the Radial Blur effect. The default settings apply a spin
blur. This creates a circular (i.e., radial) blur around the edges. It
reminds me of what a freeze frame from video of this texture in a
dryer might look like (Fig. 4.56 ).
The fi rst change I'd like to make here is to change the
Antialiasing setting at the bottom of the effect in the Effect
Controls panel. Change it from its default Low to High. This will
Figure 4.55 The texture from the
Radial Blur.aep project.
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