This chart compares the different levels of measuring the illumination of a scene. Most surveillance cameras' sensitivity is measured in lux, while light output of a light source is measured in FTCD or foot candles. Use this chart when choosing a surveillance camera for a given area, or choosing lighting to illuminate the area to be surveilled. | |||
Condition | Illumination Scale | Details | |
FTCD | Lux | ||
Sunlight Full Daylight Overcast Day Very Dark Day Twilight Deep Twilight |
10,000 1,000 100 10 1 0.1 |
107,527 10,764 1,076 107.64 10.76 1.08 |
Daylight Range |
Full Moon Quarter Moon Starlight Overcast Night |
0.01 0.001 0.0001 0.00001 |
0.108 0.0108 0.0011 0.0001 |
Low Light Range |
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