Optoma EH490 - Page 71

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71
ADDITIONAL INFORMATION
Lens Shift Range
Offset (Hd)
PJ lens Center to top of image Image Shift Range
Vertical +
(Max) (A)
Vertical -
(Min) (B) (D) = (A) - (B)
Vertical
range at any
Horizontal
position
Horizontal +
(Right)
Horizontal -
(Left)
cm cm cm cm cm cm m inch
52.0 44.3 7.7 N/A 0.0 0.0 0.07 2.76
57.8 49.3 8.5 N/A 0.0 0.0 0.08 3.15
72.2 61.6 10.7 N/A 0.0 0.0 0.10 3.94
86.7 73.9 12.8 N/A 0.0 0.0 0.12 4.72
101.1 86.2 14.9 N/A 0.0 0.0 0.14 5.51
115.6 98.5 17.0 N/A 0.0 0.0 0.16 6.30
130.0 110.8 19.2 N/A 0.0 0.0 0.18 7.09
144.5 123.2 21.3 N/A 0.0 0.0 0.19 7.48
173.3 147.8 25.6 N/A 0.0 0.0 0.24 9.45
216.7 184.7 32.0 N/A 0.0 0.0 0.30 11.81
260.0 221.7 38.3 N/A 0.0 0.0 0.36 14.17
288.9 246.3 42.6 N/A 0.0 0.0 0.40 15.75
361.1 307.9 53.2 N/A 0.0 0.0 0.50 19.69
433.4 369.5 63.9 N/A 0.0 0.0 0.59 23.23
Note:
Vertical Lens Shift values are always calculated from the Center of Projection Lens. Therefore the 
distance 6.8 cm (2.68 inch) from the Base to the Center of Projection Lens needs to be added to each
Vertical Lens Shift value.
Zoom ratio is 1.6x. 
(WXGA)
Desired Image Size Projection Distance (C)
Diagonal Width Height Wide Tele
m inch m inch m inch m feet m feet
0.91 36 0.78 30.53 0.48 19.08 1.1 3.61 1.8 5.91
1.02 40 0.86 33.92 0.54 21.2 1.3 4.27 2.0 6.56
1.27 50 1.08 42.4 0.67 26.5 1.6 5.25 2.6 8.53
1.52 60 1.29 50.88 0.81 31.8 1.9 6.23 3.1 10.17
1.78 70 1.51 59.36 0.94 37.1 2.2 7.22 3.6 11.81
2.03 80 1.72 67.84 1.08 42.4 2.6 8.53 4.1 13.45
2.29 90 1.94 76.32 1.21 47.7 2.9 9.51 4.6 15.09
2.54 100 2.15 84.8 1.35 53 3.2 10.50 5.1 16.73
3.05 120 2.58 101.76 1.62 63.6 3.8 12.47 6.1 20.01
3.81 150 3.23 127.2 2.02 79.5 4.8 15.75 7.7 25.26
4.57 180 3.88 152.64 2.42 95.4 5.7 18.70 9.2 30.18
5.08 200 4.31 169.6 2.69 106 6.4 21.00 10.2 33.46
6.35 250 5.38 212 3.37 132.5 8.0 26.25 / /
7.62 300 6.46 254.4 4.04 159 9.6 31.50 / /