How big will the spot be? Beam angles, spot diameters and throw distances for ETC Source Four profiles and other fixtures.
Quick calculator
Use the table below, or enable JavaScript to use the calculator.
ETC Source Four lens tubes
5°
Ø = 0.09 × distance
10°
Ø = 0.17 × distance
14°
Ø = 0.25 × distance
19°
Ø = 0.33 × distance
26°
Ø = 0.46 × distance
36°
Ø = 0.65 × distance
50°
Ø = 0.93 × distance
70°
Ø = 1.40 × distance
90°
Ø = 2.00 × distance
Coloured markers show the lens tube colour codes used at 2rent, see Color codes.
Spot diameter in metres
| Angle | 3 m | 6 m | 9 m | 12 m | 15 m | 20 m | 25 m | 30 m | 35 m | 40 m | Distance for 3 m Ø |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 5°Lens | 0.3 | 0.5 | 0.8 | 1.0 | 1.3 | 1.7 | 2.2 | 2.6 | 3.1 | 3.5 | 34.4 m |
| 6° | 0.3 | 0.6 | 0.9 | 1.3 | 1.6 | 2.1 | 2.6 | 3.1 | 3.7 | 4.2 | 28.6 m |
| 8° | 0.4 | 0.8 | 1.3 | 1.7 | 2.1 | 2.8 | 3.5 | 4.2 | 4.9 | 5.6 | 21.5 m |
| 9° | 0.5 | 0.9 | 1.4 | 1.9 | 2.4 | 3.1 | 3.9 | 4.7 | 5.5 | 6.3 | 19.1 m |
| 10°Lens | 0.5 | 1.0 | 1.6 | 2.1 | 2.6 | 3.5 | 4.4 | 5.2 | 6.1 | 7.0 | 17.1 m |
| 11° | 0.6 | 1.2 | 1.7 | 2.3 | 2.9 | 3.9 | 4.8 | 5.8 | 6.7 | 7.7 | 15.6 m |
| 12° | 0.6 | 1.3 | 1.9 | 2.5 | 3.2 | 4.2 | 5.3 | 6.3 | 7.4 | 8.4 | 14.3 m |
| 13° | 0.7 | 1.4 | 2.1 | 2.7 | 3.4 | 4.6 | 5.7 | 6.8 | 8.0 | 9.1 | 13.2 m |
| 14°Lens | 0.7 | 1.5 | 2.2 | 2.9 | 3.7 | 4.9 | 6.1 | 7.4 | 8.6 | 9.8 | 12.2 m |
| 15° | 0.8 | 1.6 | 2.4 | 3.2 | 3.9 | 5.3 | 6.6 | 7.9 | 9.2 | 10.5 | 11.4 m |
| 17° | 0.9 | 1.8 | 2.7 | 3.6 | 4.5 | 6.0 | 7.5 | 9.0 | 10.5 | 12.0 | 10.0 m |
| 19°Lens | 1.0 | 2.0 | 3.0 | 4.0 | 5.0 | 6.7 | 8.4 | 10.0 | 11.7 | 13.4 | 9.0 m |
| 20° | 1.1 | 2.1 | 3.2 | 4.2 | 5.3 | 7.1 | 8.8 | 10.6 | 12.3 | 14.1 | 8.5 m |
| 23° | 1.2 | 2.4 | 3.7 | 4.9 | 6.1 | 8.1 | 10.2 | 12.2 | 14.2 | 16.3 | 7.4 m |
| 25° | 1.3 | 2.7 | 4.0 | 5.3 | 6.7 | 8.9 | 11.1 | 13.3 | 15.5 | 17.7 | 6.8 m |
| 26°Lens | 1.4 | 2.8 | 4.2 | 5.5 | 6.9 | 9.2 | 11.5 | 13.9 | 16.2 | 18.5 | 6.5 m |
| 30° | 1.6 | 3.2 | 4.8 | 6.4 | 8.0 | 10.7 | 13.4 | 16.1 | 18.8 | 21.4 | 5.6 m |
| 35° | 1.9 | 3.8 | 5.7 | 7.6 | 9.5 | 12.6 | 15.8 | 18.9 | 22.1 | 25.2 | 4.8 m |
| 36°Lens | 1.9 | 3.9 | 5.8 | 7.8 | 9.7 | 13.0 | 16.2 | 19.5 | 22.7 | 26.0 | 4.6 m |
| 40° | 2.2 | 4.4 | 6.6 | 8.7 | 10.9 | 14.6 | 18.2 | 21.8 | 25.5 | 29.1 | 4.1 m |
| 45° | 2.5 | 5.0 | 7.5 | 9.9 | 12.4 | 16.6 | 20.7 | 24.9 | 29.0 | 33.1 | 3.6 m |
| 50°Lens | 2.8 | 5.6 | 8.4 | 11.2 | 14.0 | 18.7 | 23.3 | 28.0 | 32.6 | 37.3 | 3.2 m |
| 55° | 3.1 | 6.2 | 9.4 | 12.5 | 15.6 | 20.8 | 26.0 | 31.2 | 36.4 | 41.6 | 2.9 m |
| 60° | 3.5 | 6.9 | 10.4 | 13.9 | 17.3 | 23.1 | 28.9 | 34.6 | 40.4 | 46.2 | 2.6 m |
| 65° | 3.8 | 7.6 | 11.5 | 15.3 | 19.1 | 25.5 | 31.9 | 38.2 | 44.6 | 51.0 | 2.4 m |
| 70°Lens | 4.2 | 8.4 | 12.6 | 16.8 | 21.0 | 28.0 | 35.0 | 42.0 | 49.0 | 56.0 | 2.1 m |
| 90°Lens | 6.0 | 12.0 | 18.0 | 24.0 | 30.0 | 40.0 | 50.0 | 60.0 | 70.0 | 80.0 | 1.5 m |
Values are calculated from the field angle. The actual edge of the light depends on focus, lamp and lens, so use the numbers as a guide.