Runco Quantum Color Q-750d Series Installation & Operation Manual page 62

Installation
Geometry:
1. Input an anamorphic cross-hatch test pattern to the projector.
2. Unscrew the Anamorphic Lens just enough to allow it to rotate freely.
3. Grasp the lens by the center ring and rotate the lens until the image is properly
anamorphic:
Wrong Position
4. When the image geometry appears correct, tighten the
Anamorphic Lens Set Screw (item #10) to secure the lens in place.
(When viewed from the front, the rear opening on the anamorphic
lens should appear as a tall, narrow oval.)
Focus: Finally, rotate the Focus Ring on the anamorphic
lens to fine-tune the optical focus.
46 Q-750d Series Installation/Operation Manual
Correct Position