Panasonic PT-D7700 Operating Instructions Manual page 23

Calculation formulas for projection distance by lens types (for PT-DW7000U)
Model number of projection lens Aspect ratio
ET-D75LE1
(1.5–2.0 :1)
ET-D75LE2
(2.0–3.0 :1)
Zoom ET-D75LE3
lens (3.0–5.0 :1)
ET-D75LE4
(5.0–8.0 :1)
ET-D75LE8
(8.0–15.0 :1)
Fixed-
ET-D75LE5
focus
(0.8:1)
lens
Minimal distance: L=0.0343 x Screen diagonal (inch) – 0.0760
16:9
Maximal distance: L=0.0458 x Screen diagonal (inch) – 0.1004
Minimal distance: L=0.0460 x Screen diagonal (inch) – 0.0795
16:9
Maximal distance: L=0.0689 x Screen diagonal (inch) – 0.1064
Minimal distance: L=0.0689 x Screen diagonal (inch) – 0.0958
16:9
Maximal distance: L=0.1151 x Screen diagonal (inch) – 0.1216
Minimal distance: L=0.1151 x Screen diagonal (inch) – 0.1158
16:9
Maximal distance: L=0.1831 x Screen diagonal (inch) – 0.1013
Minimal distance: L=0.1831 x Screen diagonal (inch) – 0.3862
16:9
Maximal distance: L=0.3430 x Screen diagonal (inch) – 0.3598
16:9 L= 0.0176 x Screen diagonal (inch) – 0.0835
Projection distance (L) formula Units: m
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