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26 Runco SC-30d/SC-35d Installation/Operation Manual
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Table 3-4 lists the lens shift limits for each available SC-30d/SC-35d lens, as percentages
and absolute measurements with a 108 x 60.75 inch (1.78:1) screen.
Folded Optics In rear-screen applications where space behind the projector is limited, a mirror may be
used to fold the optical path, as shown in Figure 3-5. The position of the projector and
mirror must be accurately set. If you are considering this type of installation, contact your
dealer for assistance.
Figure 3-5. Folded Optics
Table 3-4. SC-30d/SC-35d Vertical and Horizontal Lens Shift Limits
Telesto A Telesto B Telesto C Telesto D Telesto E
Lens Shift Limits, as Percentages of Screen Height or Width (Note 1)
Vertical
(Note 2)
Up
(Note 3)
0%
Down 50% - 100%
Horizontal
(Note 1)
Left 44%
Right 44%
Lens Shift Limits in Inches, with a 108-by-60.75 inch (1.78:1) Screen
Vertical
Up
(Note 3)
0.00
Down 30.38 - 60.75
Horizontal
Left 47.52
Right 47.52
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 apply to ceiling mount configurations. For floor installations
(where the projector is upright), reverse the up/down vertical offset percentages.
3. Lens shift is not possible in any direction with the Telesto A lens. The vertical position is fixed at
50% down.
➤
Screen
Mirror