Screen size and projection distance, Normal mode (4:3), Stretch mode (16:9) – Eiki/Elf EIP-4500 User Manual
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Fixed Wide Lens (AH-45201)
F2.5, f=11.6 mm
NORMAL Mode (4:3)
The formula for picture size and projection distance
[m/cm]
L (m) = 0.01626χ
H1 (cm) = –0.762χ
H2 (cm) = –0.48768χ
W (cm) = ±0.22352χ
[Feet/inches]
L (ft) = 0.01626χ / 0.3048
H1 (in) = –0.762χ / 2.54
H2 (in) = –0.48768χ / 2.54
W (in) = ±0.22352χ / 2.54
χ:
Picture size (diag.) (in/cm)
L:
Projection distance(m/ft)
H:
Distance from the lens center to the bottom of the image (cm/in)
H1: Lower distance from the lens center to the bottom of the image (cm/in)
H2: Upper distance from the lens center to the bottom of the image (cm/in)
W:
Distance from the lens center to the center of the image (cm/in)
Note
• There may be an error of ± 3% in the above values.
• Values with a minus (–) sign indicate the distance from the lens center below the bottom of the image.
The formula for picture size and projection distance
[m/cm]
L (m) = 0.01771χ
H1 (cm) = –0.62263χ
H2 (cm) = –0.32377χ
W (cm) = ±0.24352χ
[Feet/inches]
L (ft) = 0.01771χ / 0.3048
H1 (in) = –0.62263χ / 2.54
H2 (in) = –0.32377χ / 2.54
W (in) = ±0.24352χ / 2.54
χ:
Picture size (diag.) (in/cm)
L:
Projection distance(m/ft)
H:
Distance from the lens center to the bottom of the image (cm/in)
H1: Lower distance from the lens center to the bottom of the image (cm/in)
H2: Upper distance from the lens center to the bottom of the image (cm/in)
W:
Distance from the lens center to the center of the image (cm/in)
STRETCH Mode (16:9)
Picture (Screen) size
Projection distance
Diag. [χ]
Width
Height
[L]
Lower [H1]
Upper [H2]
150'' (381 cm)
305 cm (120'')
229 cm
(90'')
2.4 m
(8' 0")
–114.3 cm
(–45")
–73.2 cm (–28
51
/
64
"
)
±33.5 cm
(13
13
/
64
"
)
100'' (254 cm)
203 cm
(80'')
152 cm
(60'')
1.6 m
(5' 4")
–76.2 cm
(–30")
–48.8 cm (–19
13
/
64
"
)
±22.4 cm
(8
51
/
64
"
)
84'' (213 cm)
171 cm
(67'')
128 cm
(50'')
1.4 m
(4' 6")
–64.0 cm (–25
13
/
64
")
–41.0 cm (–16
1
/
8
"
)
±18.8 cm
(7
25
/
64
")
80'' (203 cm)
163 cm
(64'')
122 cm
(48'')
1.3 m
(4' 3")
–61.0 cm
(–24")
–39.0 cm (–15
23
/
64
"
)
±17.9 cm
(7
3
/
64
")
Distance from the lens center to
the bottom of the image [H]
Distance from the lens
center to the center of the
image [W]
Screen Size and Projection Distance
Picture (Screen) size
Projection distance
Diag. [χ]
Width
Height
[L]
Lower [H1]
Upper [H2]
133'' (338 cm)
294 cm (116'')
166 cm
(65'')
2.4 m
(7' 9")
–82.8 cm (–32
39
/
64
")
–43.1 cm (–16
61
/
64
")
±32.4 cm
(12
3
/
4
")
106'' (269 cm)
235 cm
(92'')
132 cm
(52'')
1.9 m
(6' 2")
–66.0 cm (–25
63
/
64
")
–34.3 cm (–13
33
/
64
")
±25.8 cm
(10
5
/
32
")
100'' (254 cm)
221 cm
(87'')
125 cm
(49'')
1.8 m
(5' 10")
–62.3 cm (–24
33
/
64
")
–32.4 cm (–12
3
/
4
")
±24.4 cm
(9
19
/
32
")
92'' (234 cm)
204 cm
(80'')
115 cm
(45'')
1.6 m
(5' 4")
–57.3 cm (–22
35
/
64
")
–29.8 cm (–11
47
/
64
")
±24.4 cm
(8
53
/
64
")
84'' (213 cm)
186 cm
(73'')
105 cm
(41'')
1.5 m
(4' 11")
–52.3 cm (–20
19
/
32
")
–27.2 cm (–10
45
/
64
")
±20.5 cm
(8
3
/
64
")
72'' (183 cm)
159 cm
(63'')
90 cm
(35'')
1.3 m
(4' 2")
–44.8 cm (–17
21
/
32
")
–23.3 cm
(–9
11
/
64
")
±17.5 cm
(6
29
/
32
")
Distance from the lens center to
the bottom of the image [H]
Distance from the lens
center to the center of the
image [W]