Epson PowerLite 7700p User Manual page 4

EPSON PowerLite 7700p Projector
If you place the projector level with the bottom of the screen,
the image will be square and you won't have to adjust it. If
you place the projector higher than the bottom of the screen,
the image will still be square, but you won't be able to fill the
whole screen with the image.
The projector can be installed for three different viewing
setups: front projection, ceiling mounting, or rear projection
onto a semi-transparent screen, as shown:
front projection
To project from overhead, you'll need to select
projector's Advanced menu. To project from the rear, select
.
Rear Proj
If you're ceiling-mounting the projector and you place it
above screen level, you'll have to tilt it down to position the
image on-screen. This causes the image to lose its square
shape. You can then correct the distortion by using the
Keystone function in the projector's menu system or by using
the button on the projector's control panel.
Keystone
If you place the projector's lens so it's level with the top of the
screen, the image will be square and you won't have to adjust
it. If you place the lens lower than the top of the screen, you'll
have to tilt the projector upward if you want to fill the whole
screen with the image.
4 - EPSON PowerLite 7700p Projector
ceiling mounting
rear projection
in the
Ceiling
11/00
Image Size and Projection Distance
Use the tables below to estimate how far to place the projector
from the screen. Since the size of the image can be changed by
rotating the zoom ring, a range of distance is given for each
screen size.
Note that if you tilt the projector upward by extending the
feet or use electronic keystone correction, your image size may
vary.
Standard lens
Diagonal screen
size Distance
30 inches 3.6 - 4.3 feet (1.1 - 1.3 meters)
60 inches 7.2 - 9.2 feet (2.2 - 2.8 meters)
100 inches 12.1 - 15.7 feet (3.7 - 4.8 meters)
200 inches 24.3 - 31.8 feet (7.4 - 9.7 meters)
300 inches 36.7 - 47.6 feet (11.2 - 14.5 meters)
Long throw zoom lens (ELPAL01)
Diagonal screen
size Distance
30 inches 4.46 - 5.87 feet (1.36 - 1.79 meters)
60 inches 9.35 - 12.2 feet (2.85 - 3.71 meters)
100 inches 15.8 - 20.5 feet (4.82 - 6.25 meters)
200 inches 32.1 - 41.5 feet (9.77 - 12.64 meters)
300 inches 48.3 - 62.4 feet (14.72 - 19.02 meters)
Wide angle lens (ELPAW01)
Diagonal screen
size Distance
30 inches 2.8 - 3.6 feet (0.85 - 1.09 meters)
60 inches 5.5 - 7.2 feet (1.69 - 2.19 meters)
100 inches 9.3 - 12.0 feet (2.82 - 3.66 meters)
200 inches 18.6 - 24.0 feet (5.67 - 7.33 meters)
300 inches 28.1 - 36.1 feet (8.57 - 11.00 meters)