7.1

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Description of all Commotion Clip FX
 YBlur Amount -
sets the amount of vertical blur from 0 to 100.
As with most other Commotion Clip FX, double-clicking the numeric value opens an edit field where
you can type in the value directly. This dialog box also displays the maximum and minimum allowable
values, which in most cases are beyond the values displayed on the slider.
 Alpha Channel: Blur Alpha -
applies the blur effect to the alpha channel as well as to the RGB channels. Disabling Alpha Chan-
nel: Blur Alpha blurs the image while keeping the alpha channel’s edge, giving you additional con-
trol when making complicated composites.
Unsharpen Mask
Unsharpen Mask increases the contrast between colors that define an edge while adjusting the edge detail
to make the image appear sharper.
 Channels -
determines the channel or combination of channels to which you apply the effect. You can choose
from the individual channels of the RGBA color space.
 Amount -
controls the degree by which the brightness of edge pixels is increased.
 Link Vertical -
links Vertical radius to Horizontal radius.
 Horizontal and Vertical Radius -
define the number of pixels surrounding the edge to which the sharpening effect is applied. If you
specify a high value, more of the pixels surrounding the edge are adjusted for contrast. If you
specify a low value, only pixels at the edge are adjusted.
 Threshold -
specifies a tolerance to define edges and to prevent overall contrast adjustment that might gener-
ate noise or cause unexpected results. The Threshold value defines the range of contrast between
adjacent pixels before contrast is adjusted. A lower value produces a more pronounced effect.