Adobe Premiere Pro CS4 - Manual (Page 351)

345 USING ADOBE PREMIERE PRO CS4
Effects and transitions
Last updated 11/6/2011
Original (left), and with effect applied (right)
Gaussian Blur effect
(32-bit) The Gaussian Blur effect blurs and softens the image and eliminates noise. You can specify that the blur is
horizontal, vertical, or both.
Ghosting effect (Windows only)
The Ghosting effect overlays transparencies of the immediately preceding frames on the current frame. This effect can
be useful, for example, when you want to show the motion path of a moving object, such as a bouncing ball. Keyframes
cannot be applied to this effect.
Sharpen effect
The Sharpen effect increases the contrast where color changes occur.
Unsharp Mask effect
The Unsharp Mask effect increases the contrast between colors that define an edge.
Original (left), and with effect applied (right)
Radius The distance from the edge at which pixels are adjusted for contrast. If you specify a low value, only pixels near
the edge are adjusted.
Threshold The greatest difference between adjacent pixels for which contrast isn’t adjusted. A lower value produces a
greater result. A value that is too low causes contrast for the entire image to be adjusted and can generate noise or cause
unexpected results.