BenQ SX914, User Manual

Page: 15 / 65

Positioning your projector 15
Obtaining a preferred projected image size
The distance from the projector lens to the screen, the zoom setting, and the video format
each factors in the projected image size.
Projection dimensions
Refer to "Dimensions" on page 61 for the center of lens dimensions of this projector
before calculating the appropriate position.
The screen aspect ratio is 4:3 and the projected picture is 4:3
For example, if you are using an 120-inch screen, the recommended projection distance is
4848 mm and the vertical offset is 137-229 mm.
Screen size Distance from screen [mm] Vertical offset [mm]
Diagonal Height Width Min
distance
(with
max
zoom)
Average
Max
distance
(with
min
zoom)
Max
offset
125%
Min
offset
115%
Mid
offset
120%
[inch] [mm] [mm] [mm]
50 1270 762 1016 1544 2012 2479 95 57 76
60 1524 914 1219 1853 2414 2975 114 69 91
70 1778 1067 1422 2162 2816 3471 133 80 107
80 2032 1219 1626 2471 3219 3966 152 91 122
90 2286 1372 1829 2780 3621 4462 171 103 137
100 2540 1524 2032 3089 4023 4958 191 114 152
110 2794 1676 2235 3398 4426 5454 210 126 168
120 3048 1829 2438 3706 4828 5950 229 137 183
130 3302 1981 2642 4015 5230 6446 248 149 198
140 3556 2134 2845 4324 5633 6941 267 160 213
150 3810 2286 3048 4633 6035 7437 286 171 229
160 4064 2438 3251 4942 6437 7933 305 183 244
170 4318 2591 3454 5251 6840 8429 324 194 259
180 4572 2743 3658 5560 7242 8925 343 206 274
190 4826 2896 3861 5868 7644 9420 362 217 290
200 5080 3048 4064 6177 8047 9916 381 229 305
250 6350 3810 5080 7722 10058 12395 476 286 381
300 7620 4572 6096 9266 12070 14874 572 343 457
Maximum zoom Minimum zoom
Projection distance
Center of lens
Screen
Vertical offset
H
W