Epson EMP-7950 - Manual (Page 17)

16 Installation
User’s Guide
Screen Size and Projection Distance
The distance from the lens to the screen determines the actual image size.
The recommended distance and projection distance values given below are
for when the projector is fitted with a standard lens or an optional wide
zoom lens. If the projector has been fitted with an optional lens, refer to the
documentation provided with the lens.
While referring to the following table, position the projector so that the
images are projected onto the screen at the optimum size. The values
should be used as a guide for setting up the projector. The actual values
will vary depending on projection conditions and the zoom setting.
* When installing against a wall, leave a space of 20 cm (7.9 in.) or more
between the projector and the wall.
Recommended distance 77–1113 cm (2.5–36.5 ft.)
4:3 screen size (cm (in.)) Projection distance (cm (ft.))
30" (61 Ч 46 (24.0 Ч 18.1)) 77 −107 (2.5–3.5)
40" (81 Ч 61 (31.9 Ч 24.0)) 105 −144 (3.5–4.7)
50" (100 Ч 76 (39.4 Ч 30.0)) 133 −181 (4.4–6.0)
60" (120 Ч 90 (47.2 Ч 35.4)) 161 −219 (5.3–7.2)
80" (160 Ч 120 (63.0 Ч 47.2)) 216 −293 (7.1–9.6)
100" (200 Ч 150 (78.7 Ч 59.1)) 272 −368 (8.9–12.1)
200" (410 Ч 300 (161.4 Ч 118.1)) 550 −740 (18.0–24.3)
300" (610 Ч 460 (240.2 Ч 181.1)) 827 −1113 (27.1–36.5)
Screen
90º Centre of lens
*
Projection distance
TIP
The standard lens or the optional wide zoom lens allows a zoom ratio
of up to about 1.35. The image size at the maximum zoom setting is
about 1.35 times bigger than the image size at the minimum zoom
setting.