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28 Q-1500d Series Installation/Operation Manual
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Table 3-4 lists the usable lens shift ranges for each available Q-1500d lens, as
percentages and absolute measurements with a 96 x 54 inch (1.78:1) screen.
Folded Optics In rear screen applications where space behind the projector is limited, one or mirrors may
be used to fold the optical path, as shown in Figure 3-5. The position of the projector and
mirror(s) must be accurately set.
Figure 3-5. Folded Optics
Table 3-4. Vertical and Horizontal Lens Shift Ranges
Lens Configuration
Standard or
Short-Throw
Primary, with or
without Shasta
Anamorphic
Lens
Standard
Primary
with Whitney
Anamorphic
Lens
Q-1500d Ultra
(Long-Throw
Primary), with or
without Shasta
Anamorphic
Lens
Lens Shift Limits, as Percentages of Screen Height or Width (Note 1)
Vertical
(Note 2)
Up 25% (none) 35%
Down 60% 50% - 60% 35%
Horizontal
Left 12.5% (none) 7.5%
Right 12.5% (none) 7.5%
Lens Shift Limits in Inches, with a 96-by-54 inch (1.78:1) Screen
Vertical
Up 13.50 (none) 18.90
Down 32.40 27.00 - 32.40 18.90
Horizontal
Left 12.00 (none) 7.20
Right 12.00 (none) 7.20
Notes:
1. Vertical shift limits are percentages of the screen height. Horizontal shift limits are percentages of
the screen width.
2. Vertical lens shift figures are for ceiling mount configurations. For installations where the
projector is upright, reverse the up/down vertical lens shift percentages.
➤
Screen
Mirror