Runco QUANTUM COLOR Q-750I - Manual (Page 32)

Installation
16 Q-750i Series Installation/Operation Manual
PRE
L
IMINAR
Y
Vertical and Horizontal
Lens Shift
You can use the lens shift controls on the projector remote 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)
Vertical Lens Shift (Standard Q-750i): The Q-750i provides up to 60% of vertical
lens shift up or down. For example, with a 100 x 56 inch (1.78:1) screen, you can shift
the image up to 33.60 inches (0.85 meters) above or below the screen center.
Vertical Lens Shift (Q-750i/CineWide or Q-750i/CineWide with AutoScope): The
Q-750i provides up to 25% of upward vertical lens shift and up to 60% of
downward vertical lens shift. For example, with a 100 x 56 inch (1.78:1) screen, you
can shift the image up to 14.00 inches (0.36 meters) above or 33.60 inches (0.85 meters)
below the screen center.
Horizontal Lens Shift: The Q-750i provides up to 12.5% of horizontal lens shift left
or right. For example, with a 100 x 56 inch (1.78:1) screen, you can shift the image up to
12.50 inches (0.32 meters) left or right of the screen center.
➤
Base plate
to lens center =
approx. 5-6" (depending
on the amount of lens shift)
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.