Adobe After Effects CS3 - Manual (Page 374)

AFTER EFFECTS CS3
User Guide
369
Original (top left), with effect applied (bottom left), and with effect applied and Invert Alpha selected (bottom right)
Depth The z axis value at which to slice the image. Everything with a depth value less than this Depth value is matted out.
To determine the depth of an object, click it in the Composition panel or Layer panel using the Selection tool while
the effect is selected.
Feather The amount of feather along the matte’s edges.
Invert Select to matte out everything with a depth greater than the Depth value. Deselect to matte out everything
with a depth less than the Depth value.
See also
“About 3D layers” on page 171
Depth Of Field effect
The Depth Of Field effect simulates a camera that’s focusing at one depth (focal plane) in a 3D scene, blurring objects
at other depths. This effect uses the depth information from the auxiliary channel of an imported file representing a
3D scene. To use the depth information that After Effects calculates for a camera layer, see “Create a camera layer
and change camera settings” on page 176.
This effect works with 8-bpc color.
Original (top left), and with Depth Of Field applied using different Focal Plane values (bottom left and bottom right)
Focal Plane The distance along the z axis of the focal plane from the camera.