Add lighting effects – Adobe Premiere Pro CS4 User Manual
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USING ADOBE PREMIERE PRO CS4
Effects and transitions
Last updated 11/6/2011
Adjust edges, blurs and brightness using Convolution presets
You can control the fine details of blurring, embossing, sharpening, and other effects by applying the Convolution
Kernel effect or one of the convolution presets based on it. Convolution Kernel, and the presets based on it, overlays a
matrix of numbers onto a matrix of pixels. You can set the values for each cell in the matrix using sliders in the Effect
Controls panel, and you can use keyframes to change these values over time. To achieve a desired effect, it is often
easier to apply one of the convolution presets and to modify it, than to apply and modify the Convolution Kernel effect
itself.
1
In the Effects panel, click the triangle to expand the Video Effects bin, and then click the triangle to expand the
Adjust bin.
2
Drag the Convolution Kernel effect to the clip in a Timeline panel.
If the clip is already selected in a Timeline panel, you can drag the Convolution Kernel to the Video Effects section of
the Effect Controls panel.
3
In the Effect Controls panel, click the triangle next to Convolution Kernel to expand it.
Each of the settings that start with the letter “M” represents a cell in a 3X3 matrix. For example “M11” represents the
cell at row 1, column 1. “M22” represents the cell in the center of the matrix.
4
Click on a number next to any of the cell settings.
5
Type a value (from –999 to +999) by which you want to multiply that pixel’s brightness value.
6
Repeat the last step for all pixels that you want to include in the operation. You don’t need to type values for all of
the cell settings.
7
Click the number next to Scale, and type the value by which to divide the sum of the brightness values of the pixels
included in the calculation.
8
Click the number next to Offset, and type the value to be added to the result of the scale calculation.
9
Click OK.
The effect is applied to each pixel in the clip, one at a time.
More Help topics
Add Lighting Effects
You can use up to five lights to introduce creative effects. You can control such lighting properties as lighting type,
direction, intensity, color, lighting center, and lighting spread. There is also a Bump Layer control for using textures
or patterns from other footage to produce special effects such as a 3D-like surface effect. For a video tutorial about
using Lighting Effects and the Basic 3D effect, see
Media Net blog.
Note: All Lighting Effects properties except Bump Layer can be animated using keyframes.
You can directly manipulate the Lighting Effects properties in the Program Monitor. Click the Transform icon
next to Lighting Effects in the Effect Controls panel to display the adjustment handles and Center circle.