ViewSonic Pro9000 User Manual page 21

the position or the zoom ring. For example: to obtain an image size of 60" set the
projector at a distance 2.0 m and 2.4 m from the screen and adjust the zoom level
accordingly.
Screen size
Diagonal (inch) W (cm) x H (cm)
<A>
30 66 x 37
40 89 x 50
50 111 x 62
60 133 x 75
70 155 x 87
80 117 x 100
90 199 x 112
100 221 x 125
110 247X 139
120 266 x 149
130 287 x 161
140 311 x 175
150 332 X187
Zoom Ratio: 1.2x
Screen size v.s. Distance table
Distance (m)
Max zoom Min zoom
<B>
1.0
1.3
1.7
2
2.3
2.7
3.0
3.3
3.7
4
4.3
4.7
5
20
Top (cm)
From base to top of image
<C>
1.2
1.6
2
2.4
2.8
3.2
3.6
4.0
4.4
4.8
5.2
5.6
6
<D>
43
58
72
87
101
116
130
144
161
173
187
204
217