Vertical And Horizontal Lens Shift; Projector Placement; Vertical Lens Shift (Example Only) - Runco XtremeProjection X-450d Installation & Operation Manual

Installation
Vertical and Horizontal
Lens Shift
Ceiling Installation
Height
x
Lens Center
Floor Installation
Height
Lens Center
x
Figure 3-2. Projector Placement
You can use the 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 3-3
and Figure 3-4.
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.
Figure 3-3. Vertical Lens Shift (EXAMPLE ONLY)
Ceiling
Projection Distance
Lens Center
Screen
Screen
Lens Center
Projection Distance
Floor
22 Runco X-400d/X-450d Installation/Operation Manual
Screen Center
0%
50% Height
Lens Shift
(0.5 x H)
100% Height
Lens Shift
(1.0 x H)