Illuminance
Updated: 10/01/2023 by Computer Hope
Illuminance is the measurement of light illuminating a surface. The scientific unit for measuring illuminance is called a lux (lx). Below are examples of different illuminance levels under different lighting conditions.
Examples levels of illuminance
| Lighting condition | Candles | Lux |
|---|---|---|
| Sunlight | 10,000 | 107,527 |
| Full daylight | 1,000 | 10,752 |
| Overcast day | 100 | 1,075 |
| Very dark day | 10 | 107 |
| Twilight | 1 | 10.8 |
| Deep twilight | 0.1 | 1.08 |
| Full moon | 0.01 | 0.108 |
| Quarter moon | 0.001 | 0.0108 |
| Starlight | 0.0001 | 0.0011 |
| Overcast night | 0.00001 | 0.0001 |