Runco VideoXtreme VX-11d Installation & Operation Manual page 64

Installation
Adjusting the Yaw: Loosen the Yaw/X-Adjustment Levers to allow the lens to pivot freely
from side to side. Then, angle the lens to even out any left-right pincushion distortion:
Anamorphic Lens (Top View)
Correct Position
Wrong Position
Once the proper lens angle has been set, firmly tighten the Yaw/X-Adjustment Levers to
secure the lens in place.
48 Runco VX-11d Installation/Operation Manual