Chapter 2
Getting Started — Setting up
ENGLISH - 31
Projection distance by Projection Lens
A ±5 % error in listed projection distances may occur.
In addition, when [KEYSTONE] is used, distance is corrected to become smaller than the specified screen size.
For PT-EZ770T
r
When the screen aspect ratio is 16:10
(Unit: m)
Lens type
Standard
zoom lens
Optional lens
Height position (H)
*2
Fixed-
focus
lens
Short focus
zoom lens
Long focus
zoom lens
Ultra long
focus zoom
lens
Projection Lens Model No.
—
ET-ELW21
ET-ELW20
ET-ELT20
ET-ELT21
Standard zoom
lens/ET-ELW20/
ET-ELT20/
ET-ELT21
ET-ELW21
(Fixed)
Throw ratio
*1
1.7-2.8:1
0.8:1
1.3-1.7:1
2.8-4.6:1
4.6-7.2:1
Projected image size
Projection distance (L)
Diagonal (SD) Height
(SH)
Width
(SW)
Min.
(LW)
Max.
(LT)
Fixed
Min.
(LW)
Max.
(LT)
Min.
(LW)
Max.
(LT)
Min.
(LW)
Max.
(LT)
1.02 (40")
0.538
0.862
1.36
2.35
0.63
1.02
1.41
2.29
3.81
3.72
6.03
-
0.05 - 0.59
0.27
1.27 (50")
0.673
1.077
1.71
2.95
0.80
1.29
1.77
2.89
4.79
4.70
7.59
-0.07 - 0.74
0.34
1.52 (60")
0.808
1.292
2.06
3.55
0.97
1.55
2.14
3.49
5.77
5.68
9.15
-
0.08 - 0.89
0.40
1.78 (70")
0.942
1.506
2.42
4.15
1.14
1.82
2.50
4.09
6.75
6.66
10.71
-
0.09 - 1.04
0.47
2.03 (80")
1.077
1.723
2.77
4.76
1.32
2.09
2.87
4.69
7.73
7.64
12.27
-0.11 - 1.18
0.54
2.29 (90")
1.212
1.939
3.12
5.36
1.49
2.36
3.23
5.30
8.71
8.63
13.83
-
0.12 - 1.33
0.61
2.54 (100")
1.346
2.154
3.48
5.96
1.66
2.63
3.60
5.90
9.69
9.61
15.39
-
0.13 - 1.48
0.67
3.05 (120")
1.615
2.585
4.18
7.16
2.00
3.16
4.32
7.10
11.65 11.57 18.51
-0.16 - 1.78
0.81
3.81 (150")
2.019
3.231
5.24
8.96
2.52
3.96
5.42
8.90
14.59 14.52 23.19
-0.20 - 2.22
1.01
5.08 (200")
2.692
4.308
7.01
11.96
3.38
5.31
7.25
11.91 19.49 19.43 30.99
-
0.27 - 2.96
1.35
6.35 (250")
3.365
5.385
8.77
14.96
4.24
6.65
9.07
14.91 24.39 24.34 38.79
-
0.34 - 3.70
1.68
7.62 (300")
4.039
6.462
10.54 17.97
5.10
7.99
10.9
17.92 29.29 29.25 46.59
-0.40 - 4.44
2.02
8.89 (350")
4.712
7.539 12.30 20.97
5.95
9.33
12.73 20.92 34.19 34.16 54.39
-
0.47 - 5.18
2.36
10.16 (400")
5.385
8.616 14.07
23.97
6.81
10.67
14.55 23.93 39.09 39.07 62.19
-
0.54 - 5.92
2.69
*1
The throw ratio is based on the value during projection with the projected image size of 2.03 m (80").
*2
When the fixed-focus lens (Model No.: ET-ELW21) is attached, the lens shift is not possible. The height position (H) becomes SH/2.
r
When the screen aspect ratio is 16:9
(Unit: m)
Lens type
Standard
zoom lens
Optional lens
Height position (H)
*2
Fixed-
focus
lens
Short focus
zoom lens
Long focus
zoom lens
Ultra long
focus zoom
lens
Projection Lens Model No.
—
ET-ELW21
ET-ELW20
ET-ELT20
ET-ELT21
Standard zoom
lens/ET-ELW20/
ET-ELT20/
ET-ELT21
ET-ELW21
(Fixed)
Throw ratio
*1
1.7-2.8:1
0.8:1
1.3-1.7:1
2.8-4.6:1
4.6-7.2:1
Projected image size
Projection distance (L)
Diagonal (SD) Height
(SH)
Width
(SW)
Min.
(LW)
Max.
(LT)
Fixed
Min.
(LW)
Max.
(LT)
Min.
(LW)
Max.
(LT)
Min.
(LW)
Max.
(LT)
1.02 (40")
0.498
0.886
1.40
2.42
0.65
1.05
1.45
2.36
3.92
3.83
6.20
-
0.05 - 0.55
0.25
1.27 (50")
0.623
1.107
1.76
3.04
0.83
1.32
1.82
2.97
4.92
4.83
7.81
-0.06 - 0.68
0.31
1.52 (60")
0.747
1.328
2.12
3.65
1.00
1.60
2.20
3.59
5.93
5.84
9.41
-0.07 - 0.82
0.37
1.78 (70")
0.872
1.550
2.49
4.27
1.18
1.87
2.57
4.21
6.94
6.85
11.01
-
0.09 - 0.96
0.44
2.03 (80")
0.996
1.771
2.85
4.89
1.35
2.15
2.95
4.83
7.95
7.86
12.62
-0.10 - 1.10
0.50
2.29 (90")
1.121
1.992
3.21
5.51
1.53
2.43
3.32
5.45
8.95
8.87
14.22
-
0.11 - 1.23
0.56
2.54 (100")
1.245
2.214
3.57
6.12
1.71
2.70
3.70
6.06
9.96
9.88
15.82
-
0.12 - 1.37
0.62
3.05 (120")
1.494
2.657
4.30
7.36
2.06
3.25
4.45
7.30
11.97 11.90 19.03
-
0.15 - 1.64
0.75
3.81 (150")
1.868
3.321
5.39
9.21
2.59
4.08
5.58
9.15
15.00 14.93 23.84
-
0.19 - 2.05
0.93
5.08 (200")
2.491
4.428
7.20
12.29
3.47
5.46
7.45
12.24
20.03 19.98 31.86
-
0.25 - 2.74
1.25
6.35 (250")
3.113
5.535
9.02
15.38
4.36
6.83
9.33
15.33 25.07 25.02 39.87
-
0.31 - 3.42
1.56
7.62 (300")
3.736
6.641
10.83
18.47
5.24
8.21
11.20 18.42
30.10 30.07 47.89
-
0.37 - 4.11
1.87
8.89 (350")
4.358
7.748
12.65 21.55
6.12
9.59
13.08 21.51 35.14 35.12 55.91
-
0.44 - 4.79
2.18
10.16 (400")
4.981
8.855
14.46 24.64
7.00
10.97 14.96
24.60 40.18 40.17
63.92
-
0.50 - 5.48
2.49
*1
The throw ratio is based on the value during projection with the projected image size of 2.03 m (80").
*2
When the fixed-focus lens (Model No.: ET-ELW21) is attached, the lens shift is not possible. The height position (H) becomes SH/2.
