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Setting up
ENGLISH - 41
Getting Started
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Formula to calculate projection distance per projection lens (for
PT-DW17KE)
Projection lens Throw ratio Aspect ratio Projection distance (L) formula
Zoom lens
ET-D75LE1
1.5 to 2.0:1 16:9
Min. (LW) L = 1.3504 x SD (m) – 0.0760
Max. (LT) L = 1.8031 x SD (m) – 0.1004
2.0 to 2.7:1 4:3
Min. (LW) L = 1.6496 x SD (m) – 0.0760
Max. (LT) L = 2.2047 x SD (m) – 0.1004
ET-D75LE2
2.1 to 3.1:1 16:9
Min. (LW) L = 1.8110 x SD (m) – 0.0795
Max. (LT) L = 2.7126 x SD (m) – 0.1064
2.7 to 4.1:1 4:3
Min. (LW) L = 2.2165 x SD (m) – 0.0795
Max. (LT) L = 3.3228 x SD (m) – 0.1064
ET-D75LE3
3.1 to 5.2:1 16:9
Min. (LW) L = 2.7126 x SD (m) – 0.0958
Max. (LT) L = 4.5315 x SD (m) – 0.1216
4.1 to 6.9:1 4:3
Min. (LW) L = 3.3228 x SD (m) – 0.0958
Max. (LT) L = 5.5472 x SD (m) – 0.1216
ET-D75LE4
5.2 to 8.2:1 16:9
Min. (LW) L = 4.5315 x SD (m) – 0.1158
Max. (LT) L = 7.2087 x SD (m) – 0.1013
6.9 to 11.0:1 4:3
Min. (LW) L = 5.5472 x SD (m) – 0.1158
Max. (LT) L = 8.8228 x SD (m) – 0.1013
ET-D75LE8
8.2 to 15.4:1 16:9
Min. (LW) L = 7.2087 x SD (m) – 0.3862
Max. (LT) L = 13.5039 x SD (m) – 0.3598
10.9 to 20.5:1 4:3
Min. (LW) L = 8.8228 x SD (m) – 0.3862
Max. (LT) L = 16.5354 x SD (m) – 0.3598
ET-D75LE6
1.0 to 1.2:1 16:9
Min. (LW) L = 0.9094 x SD (m) – 0.0566
Max. (LT) L = 1.0906 x SD (m) – 0.0736
1.4 to 1.6:1 4:3
Min. (LW) L = 1.1142 x SD (m) – 0.0566
Max. (LT) L = 1.3346 x SD (m) – 0.0736
ET-D75LE10
1.4 to 1.9:1 16:9
Min. (LW) L = 1.2756 x SD (m) – 0.0857
Max. (LT) L = 1.6496 x SD (m) – 0.1085
1.9 to 2.5:1 4:3
Min. (LW) L = 1.5630 x SD (m) – 0.0857
Max. (LT) L = 2.0197 x SD (m) – 0.1085
ET-D75LE20
1.8 to 2.7:1 16:9
Min. (LW) L = 1.6339 x SD (m) – 0.0832
Max. (LT) L = 2.3701 x SD (m) – 0.1162
2.5 to 3.6:1 4:3
Min. (LW) L = 2.0000 x SD (m) – 0.0832
Max. (LT) L = 2.9055 x SD (m) – 0.1162
ET-D75LE30
2.7 to 5.2:1 16:9
Min. (LW) L = 2.3543 x SD (m) – 0.1131
Max. (LT) L = 4.5669 x SD (m) – 0.1765
3.6 to 6.9:1 4:3
Min. (LW) L = 2.8819 x SD (m) – 0.1131
Max. (LT) L = 5.5906 x SD (m) – 0.1765
ET-D75LE40
5.1 to 8.2:1 16:9
Min. (LW) L = 4.5079 x SD (m) – 0.1577
Max. (LT) L = 7.1890 x SD (m) – 0.1615
6.8 to 10.9:1 4:3
Min. (LW) L = 5.5197 x SD (m) – 0.1577
Max. (LT) L = 8.8031 x SD (m) – 0.1615
Fixed-focus
lens
ET-D75LE5
0.8:1 16:9
— L = 0.6929 x SD (m) – 0.0835
1.0:1 4:3
— L = 0.8504 x SD (m) – 0.0835
ET-D75LE50
0.8:1 16:9
— L = 0.6929 x SD (m) – 0.0713
1.0:1 4:3
— L = 0.8465 x SD (m) – 0.0713