A foot-candle is defined as the illuminance on a one square foot surface from a uniform source of light.
The key is to remember that foot-candles are a unit of measure for how much light is received at a location. In other words a foot-candle is a unit of measure for quantifying the certain intensity of light falling on a given object or in laments terms, the amount of light thrown from a fixture.
Learn more about Footcandles vs Lumens here.......
