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Setup (cont.)
Screen Size and Projection Distance
90°
H
Screen
Base line:
Horizontal line passing through
the lens center.
Lens center
L:Projection distance
The formula for picture size and
projection distance
L1 (ft)
= (0.048539X – 0.037278) / 0.3048
L2 (ft)
= (0.040172X – 0.037561) / 0.3048
H (in) = 0
X: Picture size (diag.) (in)
L: Projection distance (m)
L1: Maximum projection distance (ft)
L2: Minimum projection distance (ft)
H: Distance from the lens center to
the bottom of the image (in)
The formula for picture size and
projection distance
L1 (ft)
= (0.052882X – 0.037278) / 0.3048
L2 (ft)
= (0.043766X – 0.037561) / 0.3048
H (in) = –0.08171X
The formula for picture size and
projection distance
L1 (ft)
= (0.064719X – 0.037278) / 0.3048
L2 (ft)
= (0.053563X – 0.037561) / 0.3048
H (in) = 0.100X
Note
•There is an error of ± 3% in the formula above.
•Values with a minus (–) sign indicate the distance of the lens center below the bottom of the image.
NORMAL Mode (4:3)
Picture (Screen) size Projection distance (L)
Diag. (X) Width Height Maximum (L1) Minimum (L2)
300"(762 cm) 240"(610 cm) 180"(457 cm) – 39' 5" (12.0 m) 0" (0.0 cm)
250"(635 cm) 200"(508 cm) 150"(381 cm) 39' 8" (12.1 m) 32' 10"(10.0 m) 0" (0.0 cm)
200"(508 cm) 160"(406 cm) 120"(305 cm) 31' 9" (9.7 m) 26' 3" (8.0 m) 0" (0.0 cm)
150"(381 cm) 120"(305 cm) 90" (229 cm) 23' 9" (7.2 m) 19' 8" (6.0 m) 0" (0.0 cm)
100"(254 cm) 80" (203 cm) 60" (152 cm) 15' 10"(4.8 m) 13' 1" (4.0 m) 0" (0.0 cm)
84" (213 cm) 67" (170 cm) 50" (127 cm) 13' 3" (4.0 m) 10' 11"(3.3 m) 0" (0.0 cm)
72" (183 cm) 58" (147 cm) 43" (109 cm) 11' 4" (3.5 m) 9' 4" (2.9 m) 0" (0.0 cm)
60" (152 cm) 48" (122 cm) 36" (91 cm) 9' 5" (2.9 m) 7' 9" (2.4 m) 0" (0.0 cm)
40" (102 cm) 32" (81 cm) 24" (61 cm) 6' 3" (1.9 m) 5' 2" (1.6 m) 0" (0.0 cm)
STRETCH Mode (16:9)
Picture (Screen) size Projection distance (L)
Diag. (X) Width Height Maximum (L1) Minimum (L2)
250"(635 cm) 218"(554 cm) 123"(312 cm) – 35'9" (10.9 m) –20 27 / 64"(–51.9 cm)
225"(572 cm) 196"(498 cm) 110"(279 cm) 38' 11"(11.9 m) 32' 2" (9.8 m) –18 25 / 64"(–46.7 cm)
200"(508 cm) 174"(442 cm) 98" (249 cm) 34' 7" (10.5 m) 28' 7" (8.7 m) –16 22 / 64" (–41.5 cm)
150"(381 cm) 131"(333 cm) 74" (188 cm) 25' 11"(7.9 m) 21' 5" (6.5 m) –12 16 / 64" (–31.1 cm)
133"(338 cm) 116"(295 cm) 65" (165 cm) 22' 11"(7.0 m) 18' 12"(5.8 m) –10 56 / 64" (–27.6 cm)
106"(269 cm) 92" (234 cm) 52" (132 cm) 18' 3" (5.6 m) 15' 1" (4.6 m) –8 42 / 64"(–22.0 cm)
100"(254 cm) 87" (221 cm) 49" (124 cm) 17' 3" (5.3 m) 14' 3" (4.3 m) –8 11 / 64"(–20.8 cm)
92" (234 cm) 80" (203 cm) 45" (114 cm) 15' 10"(4.8 m) 13' 1" (4.0 m) –7 33 / 64"(–19.1 cm)
84" (213 cm) 73" (185 cm) 41" (104 cm) 14' 5" (4.4 m) 11' 11"(3.6 m) –6 55 / 64"(–17.4 cm)
72" (183 cm) 63" (160 cm) 35" (89 cm) 12' 4" (3.8 m) 10' 3" (3.1 m) –5 57 / 64" (–14.9 cm)
60" (152 cm) 52" (132 cm) 29" (74 cm) 10' 3" (3.1 m) 8' 6" (2.6 m) –4 58 / 64"(–12.5 cm)
40" (102 cm) 35" (89 cm) 20" (51 cm) 6' 10"(2.1 m) 5' 7" (1.7 m) –3 17 / 64"(–8.3 cm)
BORDER Mode (4:3)
Picture (Screen) size Projection distance (L)
Diag. (X) Width Height Maximum (L1) Minimum (L2)
200"(508 cm) 160"(406 cm) 120"(305 cm) – 35' 0" (10.7 m) –20" (–50.8 cm)
180"(457 cm) 144"(366 cm) 108"(274 cm) 38' 1" (11.6 m) 31' 6" (9.6 m) –18" (–45.7 cm)
150"(381 cm) 120"(305 cm) 90" (229 cm) 31' 9" (9.7 m) 26' 3" (8.0 m) –15" (–38.1 cm)
100"(254 cm) 80" (203 cm) 60" (152 cm) 21' 1" (6.4 m) 17' 5" (5.3 m) –10" (–25.4 cm)
84" (213 cm) 67" (170 cm) 50" (127 cm) 17' 9" (5.4 m) 14' 8" (4.5 m) –8 26 / 64" (–21.3 cm)
72" (183 cm) 58" (147 cm) 43" (109 cm) 15' 2" (4.6 m) 12' 6" (3.8 m) –7 13 / 64" (–18.3 cm)
60" (152 cm) 48" (122 cm) 36" (91 cm) 12' 7" (3.8 m) 10' 5" (3.2 m) –6" (–15.2 cm)
40" (102 cm) 32" (81 cm) 24" (61 cm) 8' 4" (2.6 m) 6' 11"(2.1 m) –4
" (–10.2 cm)
Distance from the lens
center to the bottom
of the image (H)
Distance from the lens
center to the bottom
of the image (H)
Distance from the lens
center to the bottom
of the image (H)