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When using a normal screen (4:3) and projecting 16:9 image
Picture (Screen) size
Diag. [χ]
Width
300 (762 cm)
240 (610 cm)
270 (686 cm)
216 (549 cm)
250 (635 cm)
200 (508 cm)
200 (508 cm)
160 (406 cm)
150 (381 cm)
120 (305 cm)
100 (254 cm)
80 (203 cm)
80 (203 cm)
64 (163 cm)
70 (178 cm)
56 (142 cm)
60 (152 cm)
48 (122 cm)
40 (102 cm)
32 (81 cm)
χ : Picture (Screen) size (diag.) (in/cm)
L: Projection distance (ft/m)
L1: Minimum projection distance (ft/m)
L2: Maximum projection distance (ft/m)
H: Distance from the lens center to the bottom of the image (in/cm)
Note
• Allow a margin of error in the values in the diagrams.
Projection distance [L]
Height
Minimum [L1] Maximum [L2]
180 (457 cm)
27 3 (8.3 m)
162 (411 cm)
24 7 (7.5 m)
150 (381 cm)
22 9 (6.9 m)
120 (305 cm)
18 2 (5.5 m)
90 (229 cm)
13 8 (4.2 m)
60 (152 cm)
9 1 (2.8 m)
48 (122 cm)
7 3 (2.2 m)
42 (107 cm)
6 4 (1.9 m)
36 (91 cm)
5 5 (1.7 m)
24 (61 cm)
3 8 (1.1 m)
Distance from the lens center to
the bottom of the image [H]
5
31 7 (9.6 m)
19
/
(49 cm)
16
3
28 5 (8.7 m)
17
/
(44 cm)
8
3
26 4 (8.0 m)
16
/
(41 cm)
32
7
21 0 (6.4 m)
12
/
(33 cm)
8
21
15 9 (4.8 m)
9
/
(25 cm)
32
7
10 6 (3.2 m)
6
/
(16 cm)
16
9
8 5 (2.6 m)
5
/
(13 cm)
64
1
7 4 (2.2 m)
4
/
(11 cm)
2
55
6 4 (1.9 m)
3
/
(10 cm)
64
37
4 2 (1.3 m)
2
/
(7 cm)
64
The formula for picture size and projection distance
[Feet/inches]
L1 (ft) = 0.02771 χ / 0.3048
L2 (ft) = 0.03206 χ / 0.3048
H (in) = 0.16346 χ / 2.54
[m/cm]
L1 (m) = 0.02771 χ
L2 (m) = 0.03206 χ
H (cm) = 0.16346 χ
21
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