Apple Motion 5.1.1 - Manual (Page 244)

Chapter 7 Basic compositing 244
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Silhouette Alpha: The reverse of the Stencil Alpha blend mode, useful for cutting holes in
underlying layers.
Object used for silhouette Result Object underneath
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Silhouette Luma: The reverse of Stencil Luma.
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Behind: Forces the layer to appear behind all other layers and groups, regardless of its position
in the Layers list and Timeline. If multiple layers or groups are set to Behind, they appear
behind all other groups not set to Behind, in the order in which they appear in the Layers list.
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Alpha Add: Works similarly to the Add blend mode, but instead of adding the color channels
of overlapping layers, it adds their alpha channels together. Try using this blend mode
instead of Motion’s default method of alpha channel compositing for a different treatment of
overlapping areas of translucency.
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Light Wrap: Takes bright areas from the background layer at the edge of the matte and blurs
them into the foreground layer. This is intended to create a more organic, seamless composite,
where light from the background appears to bleed onto the foreground layer as would occur
in a natural, noncomposited image. To adjust the parameters that affect the Light Wrap, such
as Amount, Intensity, Opacity, and Mode, apply the Keyer filter and make those adjustments in
the Filters Inspector. For more information, see
Keyer filter controls on page 488.
Note: Motion applies the Light Wrap effect at the end of the rendering process. When you
add other filters to the layer, such as color correction effects, they are rendered before the
Light Wrap.
Drop shadows
Drop shadows overview
A drop shadow, by default, is a dark, translucent, offset shape that falls behind a layer, as if a light
were shining on the layer. Drop shadows are the same size as the layer to which they’re applied,
although blurring a drop shadow might enlarge it somewhat. Drop shadows create the illusion
of depth, so the foreground layer seems to pop out at the viewer. For this reason, drop shadows
are frequently used to create the impression of space between two overlapping layers.
67% resize factor