Adobe AFTER EFFECTS CS3 PROFESSIONAL User Manual page 456

Three types of grain effects: matching (top left), adding (bottom left), and removing (bottom right)
Apply a grain effect
Each grain effect is applied with default settings and is displayed in Preview viewing mode, which has a preview
region framed by a white border and centered on the image. The preview region displays the results of the grain effect
on just a portion of your image, for speed and comparison purposes. The grain effects are almost fully automatic but
also offer many controls to achieve precise results. You can also selectively apply the grain effects to portions of your
image using the extensive Blend With Original features provided with each effect.
Select the layer you want to affect.
1
Choose Effect > Noise & Grain > [effect].
2
3 Choose a viewing method from the Viewing Mode control in the Effect Controls panel:
Displays the current settings of the applied effect in a 200x200-pixel area.
Preview
Shows the current color matte or mask, or the combination of both, which results from the current
Blending Matte
settings of the Blend With Original controls group.
Renders the full active frame, using the current settings of the effect.
Final Output
Adjust the effect's controls in the Effect Controls panel.
4
The preview region in the Composition panel reflects any changes you make.
5 Choose Final Output from the Viewing Mode control.
Apply a grain effect to a selected area
The Blend With Original controls group lets you precisely apply a grain effect to a particular area of an image or
sequence by masking and matting the desired area. You can choose between two selection techniques or use a combi-
nation of both:
Excludes any area of the image that matches a selected color. By inverting the matte, you can also
Color Matching
selectively process such an area.
Uses any layer in the current composition as a mask to selectively process or exclude an area of the
Masking Layer
current layer or track.
When any grain effect is first applied, the Amount value of the Blend With Original controls group is set to 0%; this
value determines the percentage of blending between the original image and the processed version. At 0%, no
blending occurs and the selected effect is applied to the entire image at full strength; at 100%, white areas of the
blending matte are unchanged from the original image.
AFTER EFFECTS CS3 450
User Guide