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Projection lens Throw ratio Aspect ratio Projection distance (L) formula
Zoom lens ET-D75LE40
4.6 to 7.4:1 16:10
Min. (LW) L = 3.9528 x SD (m) – 0.1577
Max. (LT) L = 6.3031 x SD (m) – 0.1615
4.6 to 7.4:1 16:9
Min. (LW) L = 4.0630 x SD (m) – 0.1577
Max. (LT) L = 6.4764 x SD (m) – 0.1615
5.5 to 8.9:1 4:3
Min. (LW) L = 4.4764 x SD (m) – 0.1577
Max. (LT) L = 7.1339 x SD (m) – 0.1615
Fixed-focus
lens
ET-D75LE5
0.7:1 16:10
— L = 0.6063 x SD (m) – 0.0835
0.7:1 16:9
— L = 0.6220 x SD (m) – 0.0835
0.8:1 4:3
— L = 0.6850 x SD (m) – 0.0835
ET-D75LE50
0.7:1 16:10
— L = 0.6063 x SD (m) – 0.0713
0.7:1 16:9
— L = 0.6260 x SD (m) – 0.0713
0.8:1 4:3
— L = 0.6890 x SD (m) – 0.0713
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Formula to calculate projection distance per projection lens (for
PT-DS20KE)
Projection lens Throw ratio Aspect ratio Projection distance (L) formula
Zoom lens
ET-D75LE1 1.5 to 2.0:1
4:3
Min. (LW) L = 1.2087 x SD (m) – 0.0760
Max. (LT) L = 1.6142 x SD (m) – 0.1004
16:9
Min. (LW) L = 1.3150 x SD (m) – 0.0760
Max. (LT) L = 1.7559 x SD (m) – 0.1004
ET-D75LE2 2.0 to 3.0:1
4:3
Min. (LW) L = 1.6220 x SD (m) – 0.0795
Max. (LT) L = 2.4291 x SD (m) – 0.1064
16:9
Min. (LW) L = 1.7638 x SD (m) – 0.0795
Max. (LT) L = 2.6457 x SD (m) – 0.1064
ET-D75LE3 3.0 to 5.0:1
4:3
Min. (LW) L = 2.4291 x SD (m) – 0.0958
Max. (LT) L = 4.0591 x SD (m) – 0.1216
16:9
Min. (LW) L = 2.6457 x SD (m) – 0.0958
Max. (LT) L = 4.4213 x SD (m) – 0.1216
ET-D75LE4 5.0 to 8.0:1
4:3
Min. (LW) L = 4.0591 x SD (m) – 0.1158
Max. (LT) L = 6.4528 x SD (m) – 0.1013
16:9
Min. (LW) L = 4.4213 x SD (m) – 0.1158
Max. (LT) L = 7.0315 x SD (m) – 0.1013
ET-D75LE8
7.9 to 15.0:1 4:3
Min. (LW) L = 6.4567 x SD (m) – 0.3862
Max. (LT) L = 12.0945 x SD (m) – 0.3598
8.0 to 15.0:1 16:9
Min. (LW) L = 7.0315 x SD (m) – 0.3862
Max. (LT) L = 13.1732 x SD (m) – 0.3598
ET-D75LE6 1.0 to 1.2:1
4:3
Min. (LW) L = 0.8150 x SD (m) – 0.0566
Max. (LT) L = 0.9764 x SD (m) – 0.0736
16:9
Min. (LW) L = 0.8858 x SD (m) – 0.0566
Max. (LT) L = 1.0630 x SD (m) – 0.0736
ET-D75LE10 1.4 to 1.8:1
4:3
Min. (LW) L = 1.1417 x SD (m) – 0.0857
Max. (LT) L = 1.4764 x SD (m) – 0.1085
16:9
Min. (LW) L = 1.2441 x SD (m) – 0.0857
Max. (LT) L = 1.6102 x SD (m) – 0.1085
ET-D75LE20 1.8 to 2.6:1
4:3
Min. (LW) L = 1.4606 x SD (m) – 0.0832
Max. (LT) L = 2.1260 x SD (m) – 0.1162
16:9
Min. (LW) L = 1.5906 x SD (m) – 0.0832
Max. (LT) L = 2.3150 x SD (m) – 0.1162
ET-D75LE30 2.6 to 5.1:1
4:3
Min. (LW) L = 2.1102 x SD (m) – 0.1131
Max. (LT) L = 4.0906 x SD (m) – 0.1765
16:9
Min. (LW) L = 2.2953 x SD (m) – 0.1131
Max. (LT) L = 4.4567 x SD (m) – 0.1765
ET-D75LE40 5.0 to 8.0:1
4:3
Min. (LW) L = 4.0394 x SD (m) – 0.1577
Max. (LT) L = 6.4370 x SD (m) – 0.1615
16:9
Min. (LW) L = 4.3976 x SD (m) – 0.1577
Max. (LT) L = 7.0118 x SD (m) – 0.1615
Fixed-focus
lens
ET-D75LE5 0.8:1
4:3
— L = 0.6220 x SD (m) – 0.0835
16:9
— L = 0.6772 x SD (m) – 0.0835
ET-D75LE50 0.8:1
4:3
— L = 0.6220 x SD (m) – 0.0713
16:9
— L = 0.6772 x SD (m) – 0.0713