ADOBE AFTER EFFECTS 7.0
User Guide
355
The Remove Grain and Match Grain effects use a two-step process to manipulate grain without affecting the edges,
sharpness, or highlights of an image. First, the grain is sampled, either automatically or manually; second, the grain
is analyzed and portrayed by a mathematical model, which the effect uses to add, remove, or match the grain.
Three types of grain effects: matching (left), adding (center), and removing (right)
To apply a grain effect
Each grain effect is applied with default settings and 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.
1
Select the layer you want to affect.
2
Choose Effect > Noise & Grain >
[effect]
.
3
Choose a viewing method from the Viewing Mode control in the Effect Controls panel:
Preview
Displays the current settings of the applied effect in a 200 x 200 pixel area.
Blending Matte
Shows the current color matte or mask, or the combination of both, which results from the current
settings of the Blend With Original controls group.
Final Output
Renders the full active frame, using the current settings of the effect.
4
Adjust the effect’s controls in the Effect Controls panel; the preview region in the Composition panel reflects any
changes you make.
5
Choose Final Output from the Viewing Mode control.
To 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 your image or
sequence by masking and matting the desired area. You can choose between two selection techniques or use a combi-
nation of both:
Color Matching
Excludes any area of the image that matches a selected color. By inverting the matte, you can also
selectively process such an area.
Masking Layer
Uses any layer in the current composition as a mask to selectively process or exclude an area of the
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.
Summary of Contents for AFTER EFFECTS 7.0
Page 1: ...Chapter 1 User Guide...
