Apple Shake 4 - Manual (Page 138)

138 Chapter 4 Using Proxies
The following example shows a full-resolution image compared to a 1/3 scale proxy
image. You can see that the proxy uses 1/9th of the space, which potentially requires
11 percent of the processing time, memory, and I/O activity.
As a result, there is a dramatic difference in quality when the clip is viewed at the same
resolution, as you can see by the softening of the image to the right.
Shake automatically adjusts the values of pixel-based parameters behind the scenes in
order to compensate for the lower resolution of any proxies being used. In other words,
when using a 1/3 proxy, a Pan parameter set to 100 pixels is actually calculated by
Shake to be 33.333 pixels. The actual Pan parameter used in the interactive value field is
not modified, and continues to reflect the actual size of the original media.
Shake’s Three Proxy Methods
There are three basic approaches to using proxies that are controlled via parameters in
the Globals tab.
Full resolution 1/3 proxy
Images from The Saint provided courtesy of
Framestore CFC and Paramount British
Full resolution 1/3 proxy, enlarged