Adobe After Effects - Manual (Page 514)

Opacity
Blending Mode
To the top
Edge
Edge Radius
Thickness
Thickness * Radius
Thickness & Feather * Radius
Feather
Invert Circle
Blending Mode
To the top
To the top
Sample Point
Sample Radius
The opacity of the colored rectangles.
The blending mode to use to composite the checkerboard pattern on top of the original layer. These blending modes work
identically to the ones in the Timeline panel, except for the default None mode, which renders the checkerboard pattern only.
Circle effect
The Circle effect creates a customizable solid disk or ring.
This effect works with 8-bpc color.
None creates a solid disk. The other options all create rings. Each option corresponds to a different set of properties that determine the
shape and edge treatment of the ring:
The difference between the Edge Radius property and the Radius property is the thickness of the ring.
The Thickness property sets the thickness of the ring.
The product of the Thickness property and the Radius property is the thickness of the ring.
The product of the Thickness property and the Radius property is the thickness of the ring. The product
of the Feather property and the Radius property is the feather of the ring.
The thickness of the feather.
Inverts the matte.
The blending mode used to combine the shape and the original layer. These blending modes behave like the blending modes in
the Timeline panel, except for None, which displays only the shape, without the original layer.
Ellipse effect
The Ellipse effect draws an ellipse.
This effect works with 8-bpc, 16-bpc, and 32-bpc color.
Eyedropper Fill effect
The Eyedropper Fill effect (formerly the Color Picker effect) applies a sampled color to the source layer. This effect is useful for quickly picking a
solid color from a sample point on the original layer or picking a color value from one layer and using blending modes to apply this color to a
second layer.
This effect works with 8-bpc color.
The center of the sampled area.
The radius of the sampled area.
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