![](/images/new-backgrounds/1143749/14374955x1.webp)
Installation
Vertical and Horizontal ➤ | Proper placement of the projector relative to the screen will yield a rectangular, |
Position |
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| Ideally, the projector should be positioned perpendicular to the screen and in such a way |
| that the lens center and screen center are aligned with each other, as shown in Figure |
| Ceiling Installation |
| Ceiling |
| Height |
| Projection Distance |
| Lens Center |
| x |
|
| Screen | Lens Center |
| Floor Installation |
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| Height | Screen | Lens Center |
| Lens Center |
|
|
| x |
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| Projection Distance | |
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| Floor |
| Figure |
| |
Vertical and Horizontal Lens ➤ | If it is not possible to align the projector and screen as shown in Figure | ||
Shift | lens shift controls to center the image on the screen. Lens shift is generally expressed as a | ||
| percentage of the screen height or width, as shown in Figure | ||
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| Screen Center |
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| 0% |
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| 50% Height |
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| Lens Shift |
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| (0.5 x H) |
Base plate
to lens center =
approx. 4" (depending
on the amount of lens shift)
100% Height
Lens Shift
(1.0 x H)
150% Height
Lens Shift
(1.5 x H)
Note: This is a general example of lens shift. Lenses vary in their shift capabilities. No particular lens is used in this example.
Figure 3-4. Vertical Lens Shift
18 | Vidikron Vision Model 10/Model 12 Owner’s Operating Manual |