Adobe After Effects CS3 Manuel d'utilisateur télécharger pdf (Page 384)

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AFTER EFFECTS CS3

User Guide

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Iris Blade Curvature The roundness of the edges of the iris.

Iris Rotation The rotation of the iris.

Iris Radius The size of the iris. Increase this value for greater blur.

Specular Threshold All pixels with a brightness value greater than Specular Threshold are treated as specular

highlights.

Specular Brightness Brightness of specular highlights.

Noise controls Film grain and noise are removed when you blur an image. To make the image look more realistic,

you may want to add noise back to the image so that it doesn’t look retouched. To add noise, set Noise Amount, and

choose a noise type from the Noise Distribution menu. To add noise without affecting the color in your image,

choose Monochromatic Noise.

Stretch Map To Fit Stretches the control layer to the dimensions of the layer to which it is applied; otherwise, the

control layer is centered on the affected layer.

Radial Blur effect

The Radial Blur effect creates blurs around a point, simulating the result of a zooming or rotating camera.

You can specify the level of anti-aliasing applied at Best quality; no anti-aliasing is applied at Draft quality. At Draft

quality, the blur appears somewhat grainy. You may prefer the draft results for special effects, but the grain may

flicker on interlaced displays.

This effect works with 8-bpc, 16-bpc, and 32-bpc color.

Original (left), and with effect applied (right)

Type Spin blurs in arcs around the Center point, as if the camera were rotating; Amount specifies degrees of rotation.

Zoom blurs radially outward from the center point; Amount specifies the length of the blur.

Reduce Interlace Flicker effect

The Reduce Interlace Flicker effect reduces high vertical frequencies to make images more suitable for use in an

interlaced medium (such as NTSC video). For example, images with very thin horizontal lines can flicker when

broadcast. Reduce Interlace Flicker softens horizontal edges to reduce the flickering.

This effect works with 8-bpc color.

Note: Flicker may result from fields that haven’t been separated.

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Adobe After Effects CS3 Manuel d'utilisateur Page 384

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