Acer P1223 - Manual (Page 24)

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English
The table below shows how to achieve a desired image size by adjusting either the
position or the zoom ring. Example: To obtain an image size of 50" set the projector
at a distance between 2 m and 2.2 m from the screen and adjust the zoom level
accordingly.
Desired image size Distance (m) Top (cm)
Diagonal (inches)
<A>
W (cm) x H (cm) Max zoom
<B>
Min zoom
<C>
From base to top of
image <D>
30 61 x 46 1.2 1.3 59
40 81 x 61 1.6 1.8 79
50 102 x 76 2.0 2.2 99
60 122 x 91 2.4 2.6 119
70 142 x 107 2.8 3.1 139
80 163 x 122 3.2 3.5 158
90 183 x 137 3.6 4.0 178
100 203 x 152 4.0 4.4 198
120 244 x 183 4.8 5.3 238
150 305 x 229 6.0 6.6 297
180 366 x 274 7.2 7.9 357
200 406 x 305 8.0 8.8 396
250 508 x 381 10.0 11.0 495
300 610 x 457 12.0 594
Zoom Ratio: 1.1x