Grass Valley NewsEdit XT v.5.5 - Manual (Page 298)

Appendix Video Effects
296 Digital News Production
Perspective
You use the Perspective transformation to change the viewer’s cutout
viewpoint of an image. This only applies when an image is tilted so part of it is
farther from the viewer. The farther portion appears smaller than the closer
portion, and the amount of perspective controls how much smaller the distant
part is.
Option Range Description
X-Axis -32 to +32 Moves the image left or right along the horizontal axis.
Y-Axis -24 to +24 Moves the image left or right along the vertical axis.
Z-Axis -32 to +32 Moves the image relative to the viewing point; positive values
move the image away, making it appear smaller, negative
values move the image closer, making it appear larger.