Projection Guides
What size screen should I use?
Audience Size | Screen Width* |
1 to 20 | 5'-6' |
21 to 50 | 6'-7' |
51 to 140 | 8'-10' |
141 to 220 | 10'-12' |
221 to 390 | 12'-16' |
391+ | 16'-20' |
*Actual screen size may vary depending on ceiling height, audience seating arrangement (theatre, classroom or banquet style) and type of projector used.
35mm Projection Lens Chart
All distances are approximate.
Blue=Lens
Red=Screen
width
Purple=Distance from projector to screen
Screen Width | |||||||||||
Lenses | 60" | 6' | 7' | 7.5' | 8' | 9' | 10' | 12' | 14' | 16' | 20' |
1" Lens | 3.7 | 4.4 | 5.2 | 5.6 | 5.9 | 6.7 | 7.4 | 8.9 | 10.4 | 11.9 | 14.8 |
1.38" Lens | 5.1 | 6.1 | 7.2 | 7.7 | 8.2 | 9.2 | 10.2 | 12.3 | 14.3 | 16.4 | 20.4 |
1.5" Lens | 5.6 | 6.7 | 7.8 | 8.3 | 8.9 | 10 | 11.1 | 13.3 | 15.6 | 17.8 | 22.2 |
45mm Lens | 6.6 | 7.9 | 9.2 | 9.8 | 10.5 | 11.8 | 13.1 | 15.7 | 18.4 | 21 | 26.2 |
2" Lens | 7.4 | 8.9 | 10.4 | 11.1 | 11.9 | 13.3 | 14.8 | 17.8 | 20.7 | 23.7 | 29.6 |
60mm Lens | 8.7 | 10.5 | 12.2 | 13.1 | 14 | 15.7 | 17.5 | 21 | 24.5 | 28 | 35 |
2.75" Lens | 10.2 | 12.2 | 14.3 | 15.3 | 16.3 | 18.3 | 20.4 | 24.4 | 28.5 | 32.6 | 40.7 |
3" Lens | 11.1 | 13.3 | 15.6 | 16.7 | 17.8 | 20 | 22.2 | 26.7 | 31.1 | 35.6 | 44.4 |
4" Lens | 14.8 | 17.8 | 20.7 | 22.2 | 23.7 | 26.7 | 29.6 | 35.6 | 41.5 | 47.4 | 59.3 |
5" Lens | 18.5 | 22.2 | 25.9 | 27.8 | 29.6 | 33.3 | 37 | 44.4 | 51.9 | 59.3 | 74.1 |
6" Lens | 22.2 | 26.7 | 31.1 | 33.3 | 35.6 | 40 | 44.4 | 53.3 | 62.2 | 71.1 | 88.9 |
7" Lens | 25.9 | 31.1 | 36.3 | 38.9 | 41.5 | 46.7 | 51.9 | 62.2 | 72.6 | 83 | 103.7 |
8" Lens | 29.6 | 35.6 | 41.5 | 44.4 | 47.4 | 53.3 | 59.3 | 71.1 | 83 | 94.8 | 118.5 |
8.5" Lens | 31.5 | 37.8 | 44.1 | 47.2 | 50.4 | 56.7 | 63 | 75.6 | 88.1 | 100.7 | 125.9 |
9" Lens | 33.3 | 40 | 46.7 | 50 | 53.3 | 60 | 66.7 | 80 | 93.3 | 106.7 | 133.3 |
9.5" Lens | 35.2 | 42.2 | 49.3 | 52.8 | 56.3 | 63.3 | 70.4 | 84.4 | 98.5 | 112.6 | 140.7 |
10" Lens | 37 | 44.4 | 51.9 | 55.6 | 59.3 | 66.7 | 74.1 | 88.9 | 103.7 | 118.5 | 148.1 |
11" Lens | 40.7 | 48.9 | 57 | 61.1 | 65.2 | 73.3 | 81.5 | 97.8 | 114.1 | 130.4 | 163 |
12" Lens | 44.4 | 53.3 | 62.2 | 66.7 | 71.1 | 80 | 88.9 | 106.7 | 124.4 | 142.2 | 177.8 |