Panasonic PT-D7700 Operating Instructions Manual page 19

Projection distances by the type of projection lenses (optional)
Every type of optional projection lenses has a different projection distance to achieve the same screen size. Select
and purchase a projection lens most suitable to the size of your location referring to the following tables and the
projection distances by the type of projection lenses on the next page.
L : Projection distance
SH : Effective screen height
Projection distances by the type of projection lenses (for PT-D7700U)
• For the screen aspect ratio of 4:3
Screen
dimensions
Screen
size
Effective
Effective
(inch)
height
width
(SH)
(SW)
1.066 1.422
70
(3'6") (4'8")
1.219 1.625
80
(4'0") (5'4")
1.371 1.828
90
(4'6") (6'0")
1.524 2.032
100
(5'0") (6'8")
120 1.828 2.438
(6'0") (8'0")
150 2.286 3.048
(7'6") (10'0")
200 3.048 4.064
(10'0") (13'4")
250 3.810 5.080
(12'6") (16'8")
4.572 6.096
300
(15'0") (20'0")
5.334 7.112
350
(17'6") (23'4")
6.096 8.129
400
(20'0") (26'8")
7.620 10.160
500
(25'0") (33'4")
9.144 12.192
600
(30'0") (40'0")
Note
• The projection distances listed here involve an error of ±5%.
• Keystone distortions are corrected in the way the screen size becomes smaller than the original one.
Screen
SH
ET-D75LE1
ET-D75LE2
(2.0-3.0 :1)
(1.5-2.0 :1)
Minimum Maximum Minimum Maximum
2.07 2.77 2.80
(6'9'') (9'1'') (9'2'')
2.38 3.18 3.21
(7'9'') (10'5'') (10'6'')
2.68 3.59 3.62
(8'9'') (11'9'') (11'10'')
2.99 4.00 4.04
(9'9'') (13'1'') (13'3'')
3.60 4.82 4.86
(11'9'') (15'9'') (15'11'')
4.53 6.05 6.09
(14'10'') (19'10'') (19'11'')
6.06 8.10 8.15
(19'10'') (26'6'') (26'8'')
7.59 10.15 10.21
(24'10'') (33'3'') (33'5'')
9.13 12.19 12.27
(29'11'') (39'11'') (40'3'')
10.66 14.24 14.32
(34'11'') (46'8'') (46'11'')
12.19 16.29 16.38
(39'11'') (53'5'') (53'8'')
15.26 20.39 20.50
(50') (66'10'') (67'3'')
18.33 24.49 24.61
(60'1'') (80'4'') (80'8'')
L
Projection distance (L)
Zoom lens
ET-D75LE3
(3.0-5.0 :1)
Minimum Maximum
4.21 4.23 7.09
(13'9'') (13'10'') (23'3'')
4.83 4.84 8.13
(15'10'') (15'10'') (26'8'')
5.45 5.46 9.16
(17'10'') (17'10'') (30')
6.07 6.08 10.19
(19'10'') (19'11'') (33'5'')
7.30 7.31 12.25
(23'11'') (23'11'') (40'2'')
9.15 9.16 15.34
(30') (30') (50'3'')
12.24 12.25 20.50
(40'1'') (40'2'') (67'3'')
15.33 15.34 25.65
(50'3'') (50'3'') (84'1'')
18.41 18.42 30.81
(60'4'') (60'5'') (101')
21.50 21.51 35.96
(70'6'') (70'6'') (117'11'')
24.58 24.60 41.12
(80'7'') (80'8'') (134'10'')
30.76 30.77 51.42
(100'11'') (100'11'') (168'8'')
36.93 36.94 61.73
(121'1'') (121'2'') (202'6'')
Units: m (feet/inches)
ET-D75LE4 ET-D75LE8
(5.0-8.0 :1) (8.0-15.0 :1)
Minimum Maximum Minimum Maximum
7.10 11.37 11.09
(23'3'') (37'3'') (36'4'')
8.13 13.01 12.73
(26'8'') (42'8'') (41'9'')
14.37
9.16 14.65
(30') (48') (47'1'')
16.01
10.19 16.29
(33'5'') (53'5'') (52'6'')
12.26 19.57 19.29
(40'2'') (64'2'') (63'3'')
15.35 24.49 24.21
(50'4'') (80'4'') (79'5'')
32.40
20.50 32.69
(67'3'') (107'3'') (106'3'')
40.60
25.66 40.88
(84'2'') (134'1'') (133'2'')
48.80
30.81 49.08
(101') (161') (160'1'')
35.97 57.28 57.00
(118') (187'11'') (187')
41.12 65.47 65.19
(134'10'') (214'9'') (213'10'')
81.59
51.43 81.87
(168'8'') (268'7'') (267'8'')
97.98
61.74 98.26
(202'6'') (322'4'') (321'5'')
(Continued on next page)
Fixed-
focus lens
ET-D75LE5
(0.8 : 1)
21.14 1.02
(69'4'') (3'4'')
24.22 1.18
(79'5'') (3'10'')
27.29
1.34
(89'6'') (4'4'')
30.36
1.50
(99'7'') (4'11'')
36.50 1.81
(119'9'') (5'11'')
45.72 2.29
(150') (7'6'')
61.08
3.08
(200'4'') (10'1'')
76.44
3.87
(250'9'') (12'8'')
91.79
4.66
(301'1'') (15'3'')
107.15
(351'6'') -----
122.51
(401'11'') -----
153.23
(502'8'') -----
183.95
(603'6'') -----
19