Dell 1220 User Manual page 16

Projection
Distance
(m)
Diagonal
(inch/cm)
[A]
[B]
1.2 27.4"/69.6 cm
3 69"/ 175.26 cm
5 114"/ 289.56 cm
7 160"/ 406.4 cm
9 206"/ 523.24 cm
10 229"/ 581.66 cm
Projection
Distance
(m)
Diagonal
(inch/cm)
[A]
[B]
1.2 30"/ 76.2 cm
3 76"/ 193.04 cm
5 126"/ 320.04 cm
7 177"/ 449.58 cm
9 227"/ 576.58 cm
10 252.4"/ 641.1 cm
* This graph is for user reference only.
* Offset Ratio: 115±5%
16 Using Your Projector
Min Zoom
Image size
Width (cm) Height (cm)
[W] [H]
56 42
140 105
233 174
326 244
419 314
465 349
Max Zoom
Image size
Width (cm) Height (cm)
[W] [H]
62 46
154 115
256 192
359 269
462 346
513 385
Projector base to
Projector base to
top of image (cm)
[C]
48
120
201
281
361
401
Projector base to
Projector base to
top of image (cm)
[C]
53
133
221
310
398
442
bottom of image
(cm)
[D]
6
15
27
37
47
52
bottom of image
(cm)
[D]
7
18
29
41
52
57