Adobe After Effects CS3 Bedienungsanleitung PDF herunterladen (Seite 399)

AFTER EFFECTS CS3

User Guide

394

Guy Chen provides an example of using the Fractal Noise effect to generate the base noise (in this case for the

turbulent surface of the Sun) and then colorizing the noise with the Colorama effect:

www.adobe.com/go/learn_ae_guyfractalsun.

Input Phase controls

Get Phase From The color attribute to use as input. Choose Zero to use a color attribute from another layer.

Add Phase The second layer to use as input. To use only this layer as input, select Zero for Get Phase From;

otherwise,boththeAddPhaselayerandthelayertowhichtheeffectisappliedareused.Youcanchoosethelayerto

which the effect is applied to add a second input attribute from the same layer.

Add Phase From The color attribute from the second layer to use as input.

Add Mode How input values are combined:

• Wrap Adds the values of the two attributes for each pixel. Values above 100% are wrapped around the cycle again.

For example, a sum of 125% wraps around to 25%.

• Clamp Adds the values of the two attributes for each pixel. Values above 100% are clipped to 100%.

• Average Averagesthevaluesofthetwoattributesforeachpixel.Becausetheaverageoftwovaluesthatareeach

in the range 0% to 100% is never over 100%, wrapping and clamping by this operation are never necessary. Average

is therefore the safest option for predictable output.

• Screen Screens the second layer over the original layer; the brighter areas in the second layer brighten the first

layer, and the darker areas in the second layer are discarded. Screen mode is especially useful for compositing fire,

lens flares, and other lighting effects.

Phase Shift ThepointontheOutputCyclewheelatwhichthemappingoftheinputcolorsbegins.Apositivevalue

moves the starting point clockwise around the Output Cycle wheel.

Animate Phase Shift to cycle colors around the wheel.

Output Cycle controls

Use Preset Palette Presets for the Output Cycle. The top palettes are designed for quick color correction and

adjustment tasks. The bottom choices offer a variety of built-in color palettes for creative results.

Output Cycle Customize the output color palette by altering the colors and locations of the triangles on the Output

Cycle wheel. The triangles specify the location on the color wheel where a specific color occurs. The color between

triangles is smoothly interpolated, unless Interpolate Palette is deselected. Each Output Cycle can have 1-64

triangles.

• To change a triangle’s location, drag the triangle. Shift-drag to snap the triangle to 45-degree increments. At the

top of the wheel, the triangle snaps to either the start position or end position depending on whether you drag

from the left or right.

• To add a triangle, click in or near the wheel, and select a color from the color picker. Click slightly to the left of the

top arrows for the end color, and slightly to the right for the start color.

• To duplicate a triangle, Ctrl-drag (Windows) or Command-drag (Mac OS) the triangle.

• To delete a triangle, drag it away from the wheel.

• To change the opacity, select a triangle on the color wheel and then drag the attached triangle above the opacity

slider. Make sure that Modify Alpha is selected if you want the opacity information to affect your output.

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Adobe After Effects CS3 Bedienungsanleitung Seite 399