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Chapter 2 Getting Started — Setting up
42 - ENGLISH
Formula to calculate projection distance per projection lens
To use a screen size not listed in this manual, check the screen size SD (m) and use the respective formula to calculate projection distance.
The unit of all the formulae is m. (Values obtained by the following calculation formulae contain a slight error.)
For PT-DZ13KU, PT-DZ10KU
r Zoom lens
Projection lens Model No. Throw ratio Aspect ratio Projection distance (L) formula
ET-D75LE1
1.4 to 1.8:1 16:10
Min. (LW) L = 1.1732 x SD
-
0.0760
Max. (LT) L = 1.5709 x SD
-
0.1004
1.4 to 1.8:1 16:9
Min. (LW) L = 1.2087 x SD
-
0.0760
Max. (LT) L = 1.6142 x SD
-
0.1004
1.6 to 2.2:1 4:3
Min. (LW) L = 1.3307 x SD
-
0.0760
Max. (LT) L = 1.7756 x SD
-
0.1004
ET-D75LE2
1.8 to 2.8:1 16:10
Min. (LW) L = 1.5748 x SD
-
0.0795
Max. (LT) L = 2.3661 x SD
-
0.1064
1.8 to 2.8:1 16:9
Min. (LW) L = 1.6220 x SD
-
0.0795
Max. (LT) L = 2.4291 x SD
-
0.1064
2.2 to 3.3:1 4:3
Min. (LW) L = 1.7835 x SD
-
0.0795
Max. (LT) L = 2.6772 x SD
-
0.1064
ET-D75LE3
2.8 to 4.6:1 16:10
Min. (LW) L = 2.3661 x SD
-
0.0958
Max. (LT) L = 3.9488 x SD
-
0.1216
2.8 to 4.6:1 16:9
Min. (LW) L = 2.4291 x SD
-
0.0958
Max. (LT) L = 4.0591 x SD
-
0.1216
3.3 to 5.5:1 4:3
Min. (LW) L = 2.6772 x SD
-
0.0958
Max. (LT) L = 4.4724 x SD
-
0.1216
ET-D75LE4
4.6 to 7.4:1 16:10
Min. (LW) L = 3.9488 x SD
-
0.1158
Max. (LT) L = 6.2795 x SD
-
0.1013
4.6 to 7.4:1 16:9
Min. (LW) L = 4.0591 x SD
-
0.1158
Max. (LT) L = 6.4528 x SD
-
0.1013
5.6 to 8.9:1 4:3
Min. (LW) L = 4.4724 x SD
-
0.1158
Max. (LT) L = 7.1102 x SD
-
0.1013
ET-D75LE8
7.3 to 13.8:1 16:10
Min. (LW) L = 6.2795 x SD
-
0.3862
Max. (LT) L = 11.7677 x SD
-
0.3598
7.3 to 13.8:1 16:9
Min. (LW) L = 6.4567 x SD
-
0.3862
Max. (LT) L = 12.0945 x SD
-
0.3598
8.8 to 16.5:1 4:3
Min. (LW) L = 7.1102 x SD
-
0.3862
Max. (LT) L = 13.3189 x SD
-
0.3598
ET-D75LE6
0.9 to 1.1:1 16:10
Min. (LW) L = 0.7913 x SD
-
0.0566
Max. (LT) L = 0.9488 x SD
-
0.0736
0.9 to 1.1:1 16:9
Min. (LW) L = 0.8150 x SD
-
0.0566
Max. (LT) L = 0.9764 x SD
-
0.0736
1.1 to 1.3:1 4:3
Min. (LW) L = 0.8976 x SD
-
0.0566
Max. (LT) L = 1.0748 x SD
-
0.0736
ET-D75LE10
1.3 to 1.7:1 16:10
Min. (LW) L = 1.1186 x SD
-
0.0857
Max. (LT) L = 1.4458 x SD
-
0.1085
1.3 to 1.7:1 16:9
Min. (LW) L = 1.1497 x SD
-
0.0857
Max. (LT) L = 1.4860 x SD
-
0.1085
1.6 to 2.0:1 4:3
Min. (LW) L = 1.2663 x SD
-
0.0857
Max. (LT) L = 1.6367 x SD
-
0.1085
ET-D75LE20
1.7 to 2.4:1 16:10
Min. (LW) L = 1.4312 x SD
-
0.0832
Max. (LT) L = 2.0795 x SD
-
0.1162
1.7 to 2.4:1 16:9
Min. (LW) L = 1.4709 x SD
-
0.0832
Max. (LT) L = 2.1373 x SD
-
0.1162
2.0 to 2.9:1 4:3
Min. (LW) L = 1.6202 x SD
-
0.0832
Max. (LT) L = 2.3542 x SD
-
0.1162