Apple Shake 4 Tutorials - Manual (Page 31)

Chapter 1 Shake Basics 31
If you were paying attention when you connected images to that first Over node, your
composite looked like this for a brief period:
Although everything turned out fine, it’s important to understand why Shake clipped
the image—it’s a feature, honest—and how this can help you. This, and other
mysteries, are explained in the next section.
Setting Resolution
Shake supports an Infinite Workspace, which means you can dynamically change
resolution during the compositing process and Shake will handle it. For example, you
can simultaneously output an HD image and a 601 video image and your compositing
process will be independent of any specific resolution—yes, even independent of the
resolution you set up in the Globals tab. You can change resolution at any place, as
many times as you need, along the node tree.
Resolution = 720 x 486
Resolution = 660 x 170
Resolution = 720 x 486