Installation
Vertical and Horizontal | ➤ | Proper placement of the projector relative to the screen will yield a rectangular, |
Position |
| |
|
| Ideally, the projector should be positioned perpendicular to the screen and in such a way |
|
| that the lens center is aligned with either the top or bottom edge of the screen area, and |
|
| centered horizontally. See Figure |
| Ceiling |
Height | Projection Distance |
| |
x |
|
Lens Center
Lens Center
Screen
Height
Lens Center |
x |
Screen
Lens Center
Projection Distance
Floor
| Figure |
Vertical and Horizontal ➤ | You can use the lens shift controls to center the image on the screen. Lens shift is |
Lens Shift | generally expressed as a percentage of the screen height or width, as shown in Figure |
| and Figure |
| Screen Center |
| 0% |
| 50% Height |
| Lens Shift |
| (0.5 x H) |
| 100% Height |
| Lens Shift |
| (1.0 x H) |
Note: This is a general example of lens shift. Lenses vary in their shift capabilities. No particular
lens or projector is used in this example.
20 | Runco |