Grass Valley Zodiak v.6.0 Mar 15 2006 - Manual (Page 315)

Zodiak — User Manual 315
Transform Menus
Keyer Menu Defocus Mask
A Defocus Mask On button is available on the Keyer Mask menu. This feature
is available when the delegated keyer has Defocus turned on and an Inhibit
mask has been selected ( Figure 221 ).
Figure 221. Keyer Mask Menu, Defocus Mask On
When on, the Defocus effect can be masked so it is applied to only a portion
of the image.
Defocus is not available with a Force mask.