Exercise 16.3 Setting Up a Foreground Key
In this exercise, you key out the sky and leave the buildings of the Fountain image found
on the book??™s DVD. To do this, you want to pick the darkest, most saturated color in the
sky and set this to be the Low Clip Color, and you??™ll set the brightest, least saturated color
for the High Clip Color.
1. Load the Fountain image from the book??™s projects folder. In the Compositing tab
of the Effects panel, apply the loaded image as a Foreground Image, as shown in
Figure 16.17. Then, check Foreground Key.
The way a distant light, such as the one used here, affects a scene is independent of
its distance from the lit object. (Only its angle relative to the object affects shadows,
reflections, and the like.) But it's still a good idea to move the distant light anyway.
That way, if you decide to change it to a different light type, it will be positioned
correctly in the scene.
Inside LightWave v9 664
Chapter 16 Compositing and Postprocessing Techniques 665
Figure 16.17 Load the Fountain image as the Foreground Image in the Compositing tab of
the Effects panel.
2. Set the Low Clip Color to R:118 G:168 B:239.
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