Epson PowerLite Presenter i/i+ User Manual page 13

Ideally, keep the projector level and place it at a height so its lens is pointing near the bottom
or top of the screen, as shown below.
Projection distance
Projection distance
The size of the image is determined by the distance from the projector's lens to the screen.
Depending on your display settings and how you use the zoom ring, the actual size may differ.
Use these tables as a guide for projector placement:
16:9 aspect ratio
Diagonal image size
35 in.
(88.9 cm)
40 in.
(101.6 cm)
60 in.
(152.4 cm)
80 in.
(203.2 cm)
100 in.
(254 cm)
120 in.
(305 cm)
Center of lens
Center of lens
Projection distance
39 to 47.2 in.
(99 to 120 cm)
44.9 to 53.9 in.
(114 to 137 cm)
67.7 to 81.9 in.
(172 to 208 cm)
90.9 to 109.4 in.
(231 to 278 cm)
113.8 to 137 in.
(289 to 384 cm)
137 to 164.6 in.
(348 to 418 cm)
Offset:
The distance from the center of
the lens to the base of the
screen (or to the top of the
screen, if suspended from a
ceiling)
Offset
0.8 in.
(2 cm)
0.8 in.
(2 cm)
1.2 in.
(3 cm)
1.6 in.
(4 cm)
2 in.
(5 cm)
2.8 in.
(7 cm)
Setting up the projector
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