Acer H7550ST Series - How to Get a Preferred Image Size by Adjusting Distance and Zoom

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How to Get a Preferred Image Size by Adjusting
Distance and Zoom
The table below shows how to achieve a desired image size by adjusting either
the position or the zoom ring.
• H7550ST/E155S/HE-815ST/H1P1403/H7550STz
To obtain an image size of 70", set the projector at a distance between 1.1 m
and 1.2 m from the screen and adjust the zoom level accordingly.
Desired Image Size Distance (m) Top (cm)
Diagonal (inch)
< A >
W (cm) x H (cm)
Max zoom
< B >
Min zoom
< C >
From base to top of
image < D >
30 66 x 37 0.5 38
40 89 x 50 0.6 0.7 51
50 111 x 62 0.8 0.8 64
60 133 x 75 0.9 1.0 77
70 155 x 87 1.1 1.2 89
80 177 x 100 1.2 1.3 102
90 199 x 112 1.4 1.5 115
100 221 x 125 1.5 1.7 128
120 266 x 149 1.8 2.0 153
150 332 x 187 2.3 2.5 191
180 398 x 224 2.7 3.0 230
200 443 x 249 3.1 3.4 255
250 553 x 311 3.8 4.2 319
300 664 x 374 4.6 383
Zoom Ratio: 1.1 x
Desired distance
Height:
89 cm
From base
to top of
image
70"
Desired
image size
1.1 m
1.2 m