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6. Effects > Create a Shadow for a Green Screen Image

Create a Shadow for a Green Screen Image

Compositing someone or something into a scene is an accomplishment. But to make it believable, you might need to add a shadow.

A green screen image is one where an image is captured with a background consisting of only one color, green. You can also acquire a blue screen image, where the background is blue, or just about any other color you can imagine. The essential ingredient is that your image is in front of a single, solid-colored background, and that your subject not have the same color as your background on it. It also helps if you are able to light and set the scene with compositing in mind [Hack #22] .

When you composite a scene using a green screen, you might discover there is no shadow being cast from your subject. If you discover the scene you are attempting to composite needs a shadow, because it just doesn’t look right, there is an easy solution to your problem. Even better than that, the solution can be found within the problem itself.


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