Why is luminosity for light bulbs now labeled in Lumens rather than foot- candles or candle power? Don't foot-candles correlate with square feet making it much easier to choose? - Quora
![Continuous Light Output: Lux, Lumens, and F-Stops - A Guide to Converting Different Units of Measurement - Draco Broadcast Continuous Light Output: Lux, Lumens, and F-Stops - A Guide to Converting Different Units of Measurement - Draco Broadcast](https://dracobroadcast.com/wp-content/uploads/2020/04/BeamSpread.jpg)
Continuous Light Output: Lux, Lumens, and F-Stops - A Guide to Converting Different Units of Measurement - Draco Broadcast
![Continuous Light Output: Lux, Lumens, and F-Stops - A Guide to Converting Different Units of Measurement - Draco Broadcast Continuous Light Output: Lux, Lumens, and F-Stops - A Guide to Converting Different Units of Measurement - Draco Broadcast](https://dracobroadcast.com/wp-content/uploads/2020/04/EV_Cal1.0.jpg)