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If the projector is used with a screen size not listed in this manual, check the diagonal dimension (inch) of your
screen and calculate the projection distance using the following formulas.
Calculation formulas for projection distance by lens types (for PT-D7500U)
Model number of projection lens Aspect ratio
ET-D75LE1
ET-D75LE1SC
(1.87–2.5 :1)
ET-D75LE2
ET-D75LE2SC
(2.5–3.75 :1)
Zoom
lens
ET-D75LE3
ET-D75LE3SC
(3.75–6.25 :1)
ET-D75LE4
ET-D75LE4SC
(6.25–10.0 :1)
Fixed-
ET-D75LE5
focus
(1.0 :1)
lens
Calculation formulas for projection distance by lens types (for PT-D7600U)
Model number of projection lens Aspect ratio
ET-D75LE1
ET-D75LE1SC
(1.5–2.0 : 1)
ET-D75LE2
ET-D75LE2SC
(2.0–3.0: 1)
Zoom
lens
ET-D75LE3
ET-D75LE3SC
(3.0–5.0: 1)
ET-D75LE4
ET-D75LE4SC
(5.0–8.0: 1)
Fixed-
ET-D75LE5
focus
(0.8 : 1)
lens
Minimal distance: L=0.0412 x Screen diagonal (inch) – 0.0760
4:3
Maximal distance: L=0.0549 x Screen diagonal (inch) – 0.1003
Minimal distance: L=0.0443 x Screen diagonal (inch) – 0.0759
16:9
Maximal distance: L=0.0598 x Screen diagonal (inch) – 0.1002
Minimal distance: L=0.0552 x Screen diagonal (inch) – 0.0795
4:3
Maximal distance: L=0.0826 x Screen diagonal (inch) – 0.1061
Minimal distance: L=0.0601 x Screen diagonal (inch) – 0.0794
16:9
Maximal distance: L=0.0899 x Screen diagonal (inch) – 0.1060
Minimal distance: L=0.0833 x Screen diagonal (inch) – 0.0963
4:3
Maximal distance: L=0.137 x Screen diagonal (inch) – 0.1203
Minimal distance: L=0.090 x Screen diagonal (inch) – 0.0963
16:9
Maximal distance: L=0.0149 x Screen diagonal (inch) – 0.1023
Minimal distance: L=0.137 x Screen diagonal (inch) – 0.1146
4:3
Maximal distance: L=0.2222 x Screen diagonal (inch) – 0.1023
Minimal distance: L=0.1491 x Screen diagonal (inch) – 0.1145
16:9
Maximal distance: L=0.2418 x Screen diagonal (inch) – 0.1022
4:3
L= 0.0212 x Screen diagonal (inch) – 0.0836
16:9
L= 0.0231 x Screen diagonal (inch) – 0.0836
Minimal distance: L=0.0321 x Screen diagonal (inch) – 0.0761
5:4
Maximal distance: L=0.0427 x Screen diagonal (inch) – 0.1003
Minimal distance: L=0.0352 x Screen diagonal (inch) – 0.0761
16:9
Maximal distance: L=0.0469 x Screen diagonal (inch) – 0.1002
Minimal distance: L=0.0429 x Screen diagonal (inch) – 0.0794
5:4
Maximal distance: L=0.0645 x Screen diagonal (inch) – 0.1065
Minimal distance: L=0.0472 x Screen diagonal (inch) – 0.0793
16:9
Maximal distance: L=0.0709 x Screen diagonal (inch) – 0.1065
Minimal distance: L=0.0645 x Screen diagonal (inch) – 0.0959
5:4
Maximal distance: L=0.1075 x Screen diagonal (inch) – 0.1214
Minimal distance: L=0.7095 x Screen diagonal (inch) – 0.0958
16:9
Maximal distance: L=0.1075 x Screen diagonal (inch) – 0.1214
Minimal distance: L=0.1177 x Screen diagonal (inch) – 0.1156
5:4
Maximal distance: L=0.1724 x Screen diagonal (inch) – 0.102
Minimal distance: L=0.1182 x Screen diagonal (inch) – 0.115
16:9
Maximal distance: L=0.1892 x Screen diagonal (inch) – 0.102
5:4
L= 0.0162 x Screen diagonal (inch) – 0.0032
16:9
L= 0.0212 x Screen diagonal (inch) – 0.0318
Projection distance (L) formula
Projection distance (L) formula
Units: m
Units: m
23
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