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Spill Suppressor effect, Key out a luminance value with the Luma Key effect

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White background of original (upper-left and lower-left) is removed using Luma Key and composited over underlying layer (lower-right). Key out a luminance value with the Luma Key effect 1. Select the layer that you want to make partially transparent, and choose Effect > Keying > Luma Key. 2. Select a Key Type to specify the range to be keyed out. 3. Drag the Threshold slider in the Effect Controls panel to set the luminance value you want the matte to be based on. 4. Drag the Tolerance slider to specify the range of values to be keyed out. Lower values key out a smaller range of values near the threshold. Higher values key out a wider range of values. 5. Drag the Edge Thin slider to adjust the width of the border of the keyed area. Positive values make the mask grow, increasing the transparent area. Negative values shrink the mask. 6. Drag the Edge Feather slider to specify the softness of the edge. Higher values create a softer edge but take longer to render. Spill Suppressor effect To the top The Spill Suppressor effect removes traces of the key color from an image with a screen that's already been keyed out. Typically, the Spill Suppressor is used to remove key color spills from the edges of an image. Spills are caused by light reflecting off the screen and onto the subject. If you're not satisfied with the results from using the Spill Suppressor, try applying the Hue/Saturation effect to a layer after keying, and then decrease the saturation value to de-emphasize the key color. (See Hue/Saturation effect.) This effect works with 8-bpc and 16-bpc color. In After Effects CS6, this effect works in 32-bit color. Original greenscreen (upper-left) leaves green glow when keyed out (lower-left). Spill Suppressor removes glow (lower-right). Use the Spill Suppressor effect 1. Select the layer, and choose Effect > Keying > Spill Suppressor. 2. Choose the color you want to suppress in one of the following ways: If you already keyed out the color with a key in the Effect Controls panel, click the Color To Suppress eyedropper, and then click the screen color in the Key Color swatch for the key. In Spill Suppressor, click the Key Color swatch and choose a color from the color wheel. Note: To use the eyedropper in the Layer panel, choose Spill Suppressor from the View menu in the Layer panel.

Section	Page
What's New	2
What's new in CS6	3
What’s new in After Effects CS5.5	8
What’s new in After Effects CS5	9
After Effects getting started tutorials	15
Learn After Effects CS5 and CS5.5	16
Planning and setup	18
Setup and installation	22
Workflows	24
Workspace and workflow	27
Setup and installation	28
Workflows	30
Planning and setup	33
Working with After Effects and other applications	37
Dynamic Link and After Effects	43
Workspaces, panels, and viewers	46
General user interface items	51
Keyboard shortcuts reference	54
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Preferences	73
Projects and compositions	76
Projects	77
Timecode and time display units	80
Composition basics	82
Precomposing, nesting, and pre-rendering	87
Importing footage	92
Importing and interpreting video and audio	93
Working with footage items	98
Importing from After Effects and Adobe Premiere Pro	103
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Preparing and importing 3D image files	118
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Layers and properties	128
Creating layers	129
Selecting and arranging layers	133
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Blending modes and layer styles	153
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Cameras, lights, and points of interest	163
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Animation and Keyframes	185
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Editing, moving, and copying keyframes	192
Assorted animation tools	196
Keyframe interpolation	202
Speed	207
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Tracking 3D Camera Movement (CS6)	225
Animating with Puppet tools	228
Time-stretching and time-remapping	234
Color	241
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Color management	250
Drawing, painting, and paths	258
Paint tools: Brush, Clone Stamp, and Eraser	259
Overview of shape layers, paths, and vector graphics	266
Creating shapes and masks	271
Managing and animating shape paths and masks	279
Shape attributes, paint operations, and path operations for shape layers	287
Text	293
Creating and editing text layers	294
Formatting characters and the Character panel	299
Formatting paragraphs and the Paragraph panel	304
Animating text	306
Extruding text and shape layers (CS6)	315
Examples and resources for text animation	320
Transparency and compositing	325
Compositing and transparency overview and resources	326
Alpha channels, masks, and mattes	328
Keying	337
Roto Brush and Refine Matte	340
Effects and animation presets	345
Effects and animation presets overview	346
Effect list	368
3D Channel effects	376
Audio effects	381
Blur & Sharpen effects	384
Channel effects	390
The rolling shutter repair effect (CS6)	395
Color Correction effects	396
Distort effects	408
Generate effects	421
Keying effects	435
Matte effects	443
Noise & Grain effects	445
Obsolete effects	459
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XMP metadata	519
Memory, storage, performance	524
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GPU (CUDA, OpenGL) features in After Effects CS6	534
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Rendering and Exporting	582
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Rendering and exporting for Flash Professional and Flash Player	596
Rendering and exporting still images and still-image sequences	602
Automated rendering and network rendering	604
Converting movies	610

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To the top

White background of original (upper-left and lower-left) is removed using Luma Key and composited over underlying layer (lower-right).

Key out a luminance value with the Luma Key effect

1. Select the layer that you want to make partially transparent, and choose Effect > Keying > Luma Key.

2. Select a Key Type to specify the range to be keyed out.

3. Drag the Threshold slider in the Effect Controls panel to set the luminance value you want the matte to be based on.

4. Drag the Tolerance slider to specify the range of values to be keyed out. Lower values key out a smaller range of values near the threshold.

Higher values key out a wider range of values.

5. Drag the Edge Thin slider to adjust the width of the border of the keyed area. Positive values make the mask grow, increasing the

transparent area. Negative values shrink the mask.

6. Drag the Edge Feather slider to specify the softness of the edge. Higher values create a softer edge but take longer to render.

Spill Suppressor effect

The Spill Suppressor effect removes traces of the key color from an image with a screen that’s already been keyed out. Typically, the Spill

Suppressor is used to remove key color spills from the edges of an image. Spills are caused by light reflecting off the screen and onto the subject.

If you’re not satisfied with the results from using the Spill Suppressor, try applying the Hue/Saturation effect to a layer after keying, and then

decrease the saturation value to de-emphasize the key color. (See Hue/Saturation effect.)

This effect works with 8-bpc and 16-bpc color. In After Effects CS6, this effect works in 32-bit color.

Original greenscreen (upper-left) leaves green glow when keyed out (lower-left). Spill Suppressor removes glow (lower-right).

Use the Spill Suppressor effect

1. Select the layer, and choose Effect > Keying > Spill Suppressor.

2. Choose the color you want to suppress in one of the following ways:

If you already keyed out the color with a key in the Effect Controls panel, click the Color To Suppress eyedropper, and then click the

screen color in the Key Color swatch for the key.

In Spill Suppressor, click the Key Color swatch and choose a color from the color wheel.

Note:

To use the eyedropper in the Layer panel, choose Spill Suppressor from the View menu in the Layer panel.