Adobe After Effects CS3 Manual de usuario descargar pdf (Pagina 353)

AFTER EFFECTS CS3

User Guide

348

About effects

After Effects includes a variety of effects, which you apply to layers to add or modify video and audio characteristics.

For example, an effect can alter the exposure or color of a layer’s image, add new visual elements, manipulate sound,

distort images, remove grain, enhance lighting, animate text, or create a transition.

You browse and apply effects using the Effects & Presets panel. You modify effect properties using the Effect Controls

panel or Timeline panel or by moving effect control points in the Layer panel or Composition panel.

Youcanapplymultipleinstancesofthesameeffecttoalayer,renameeachinstance,andsetthepropertiesforeach

instance separately.

To see a video tutorial on applying and working with effects, visit the Adobe website at www.adobe.com/go/vid0228.

Note: Path operations on shape layers, such as Zig Zag and Pucker & Bloat—which you apply through the shape layer’s

Add menu—are called effects in Adobe Illustrator, but they function differently from other effects in After Effects.

Because effects are implemented as plug-ins, you can install and use additional effects that parties other than Adobe

provide. You can add a single new effect or an entire folder of new effects to the Plug-ins folder, which is located by

default in the Program Files\Adobe\Adobe After Effects CS3\Support Files (Windows) or Applications/Adobe After

Effects CS3 (Mac OS) folder. When After Effects starts, it searches the Plug-ins folder and its subfolders for all

installed effects and adds them to the Effect menu and to the Effects & Presets panel. After Effects ignores the

contents of folders with names that begin and end in parentheses; for example, the contents of the folder

(archived_effects) will not be loaded.

Adobe provides many third-party effect plug-ins with After Effects. Keylight, Color Finesse, and Cycore FX plug-ins

are installed by default with the After Effects application. The installers for some plug-ins install their documentation

in the same directory as the plug-ins themselves. Documentation for Cycore FX plug-ins is available on the Cycore

website: www.adobe.com/go/learn_ae_cycorefxdocumentation.

For more information on the various categories of After Effects effects, see “Effect reference” on page 355.

Animating effects

You animate effect properties in the same way that you animate any other properties—by adding keyframes or

expressions to them. In most cases, even effects that rely on animation for their normal use require that you set some

keyframes or expressions. For example, animate the Transition Completion property of a Transition effect or the

Evolution setting of the Fractal Noise effect to turn a static effect into a dynamic effect.

Color depth

Manyeffectssupportprocessingofimagecolorandalphachanneldataatadepthof16or32bitsperchannel(bpc).

Using an 8-bpc effect in a 16-bpc or 32-bpc project can result in a loss of color detail. If an effect supports only 8 bpc,

andyourprojectissetto16or32bpc,theEffectControlspaneldisplaysawarningicon nexttotheeffectname.

YoucansettheEffects&Presetspaneltolistonlytheeffectsthatsupportthecolordepthofthecurrentproject.(See

“Set the color depth” on page 234.)

Render order

The order in which After Effects renders masks, effects, layer styles, and transform properties—called the rendering

order—may affect the final result of an applied effect. By default, effects appear in the Timeline panel and Effect

Controls panel in the order in which they were applied. Effects are rendered in order from top to bottom in this list.

To change the order in which effects are rendered, drag the effect name to a new position in the list. (See “Render

order and collapsing transformations” on page 115.)

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