Adobe After Effects CS3 - Manual (Page 383)

AFTER EFFECTS CS3
User Guide
378
Original (left), and with effect applied (right)
Gaussian Blur effect
The Gaussian Blur effect blurs and softens the image and eliminates noise. The layer’s quality setting doesn’t affect
Gaussian Blur.
This effect works with 8-bpc, 16-bpc, and 32-bpc color.
Original (left), and with effect applied (right)
Lens Blur effect
The Lens Blur effect simulates the blurring of objects not in the focal plane of a camera. The appearance of the blur
depends on the control layer used as a depth map and the iris settings for the simulated camera aperture.
This effect works with 8-bpc and 16-bpc color.
Original (top left), Depth Map layer (bottom left), and result (bottom right)
Depth Map Layer The control layer from which the depth map is taken.
Depth Map Channel The channel of the control layer to use as the depth map. Pixels with low values correspond to
low depth (near the camera); pixels with high values correspond to high depth (far from the camera). Select Invert
Depth Map to invert this relationship.
Blur Focal Distance Depth of the focal plane, where pixels are in focus.
Iris Shape The polygon to use as the iris shape.