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261
Adobe Premiere Pro Help
Applying Effects
Using Help
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Contents
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Index
Back
261
Focal length
Changes the focal length of the camera lens. Shorter lengths provide wider
views, whereas longer focal lengths provide narrower but closer views.
Distance
Sets the distance between the camera and the center of the clip.
Zoom
Enlarges or reduces the view of the clip.
Fill color
Specifies the background color.
Fill alpha channel
When checked, makes the background transparent (useful if the clip
with the effect is superimposed). To access this check box from the Effect Controls
window, click Setup.
Channel Blur
The Channel Blur effect blurs a clip’s red, green, blue, or alpha channels individually. You
can specify that the blur is horizontal, vertical, or both. Use this effect for glow effects or if
you want a blur that does not become transparent near the edges of the layer. The Edge
Behavior option describes how to treat the edges of a blurred image. If you deselect it,
pixels outside of the image are transparent, which makes the edges of the blurred image
semitransparent. Select the Repeat Edge Pixels option to repeat the pixels around the
edges, preventing the edges from darkening and becoming more transparent.
Channel Mixer
Using the Channel Mixer effect, you can modify a color channel using a mix of the current
color channels. Use this effect to make creative color adjustments not easily done with the
other color adjustment tools. Create high-quality grayscale images by choosing the
percentage contribution from each color channel, create high-quality sepia-tone or other
tinted images, and swap or duplicate channels.
Red, Green, Blue
Specifies the contribution of the individual source channel to the
output channel.
Constant
Specifies the base amount of the input channel to be added to the output
channel.
To mix channels in an image:
1
Drag the Channel Mixer effect to the clip.
2
Drag any existing (or source) channel’s slider to the left to decrease the channel’s contri-
bution to the output channel and to the right to increase it. Or, click an underlined value,
type a value between –200% and +200% in the value box, and click OK. Using a negative
value inverts the source channel before adding it to the output channel.
3
If desired, drag the slider or type a value for the channel’s constant value. This value
adds a base amount of a channel to the output channel.
4
If desired, select Monochrome to apply the same settings to all the output channels,
creating a color image that contains only gray values.
Monochrome is useful for images that you plan to convert to grayscale. If you select and
then deselect this option, you can modify the blend of each channel separately, creating a
hand-tinted appearance.
