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Keying in After Effects CS3

Article Description

Does the idea of keying conjure up images of a meteorologist on the evening news, or a shooting technique used in motion pictures? With After Effects, even the simplest, least-expensive project can take advantage of keying. The Adobe Creative Team takes us through a step-by-step example of this technique.

Adjusting Contrast

You can make the image stand out more by adjusting the levels.

  1. Select the Talent_DV layer in the Timeline panel, and then choose Effect > Color Correction > Levels (see Figure 21).
  2. In the Levels area of the Effect Controls panel, increase the Input Black amount to 13.0.
  3. Decrease the Input White amount to 225.0 (see Figure 22).

    The Levels effect remaps the range of input color levels onto a new range of output color levels and changes the gamma correction curve. The Levels effect is useful for basic image-quality adjustment. It works the same way as the Levels adjustment in Photoshop.

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