Radial Blur Effect; Reduce Interlace Flicker Effect; Sharpen Effect - Adobe AFTER EFFECTS 7.0 Manual

The rotation of the iris.
Iris Rotation
The size of the iris. Increase this value for greater blur.
Iris Radius
To introduce specular highlights, set Specular Threshold. All pixels with a brightness value greater than Specular
6
Threshold are treated as specular highlights. To increase the brightness of the highlights, increase Specular
Brightness.
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 the footage 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.

Radial Blur effect

The Radial Blur effect creates blurs around a specific point in a layer, simulating the effects of a zooming or rotating
camera. 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.
The Amount control specifies the amount of blur, depending on the choice (Spin or Zoom) for Type. For a Spin blur,
which applies blurs in circles around the center point, the Amount value indicates the degree of rotation. For a Zoom
blur, which applies blur that radiates out from the center point, the Amount value specifies the degree of radial
blurring. You can specify the level of anti-aliasing applied at Best quality; no anti-aliasing is applied at Draft quality.
This effect works with 8-bpc and 16-bpc color.
Original (left); with effect applied (right)

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 have not been separated.

Sharpen effect

The Sharpen effect increases the contrast where color changes occur. The layer's quality setting does not affect
Sharpen.
This effect works with 8-bpc and 16-bpc color.
ADOBE AFTER EFFECTS 7.0 393
User Guide