Runco Home Theater Projection System Benutzerhandbuch

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LightStyle™ LS-12HBd Installation/Operation Manual
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Figure 3-2. Projector Placement
Vertical and Horizontal
Lens Shift
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.
Figure 3-3. Vertical Lens Shift (EXAMPLE ONLY)
Screen
Height
Projection Distance
Ceiling
x
Lens Center
Lens Center
Ceiling Installation
Screen
Height 
Floor
Lens Center
Projection Distance
Floor Installation
Lens Center
x
50% Height
Lens Shift 
(0.5 x H)
100% Height
Lens Shift
(1.0 x H)
Screen Center
0%
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.