The Online Resource for Sports Photography

A special gallery created by member
Guy Rhodes
"Discharge Light White Balance Tests"     [index] Next ->>
Discharge -vs- Tungsten In this example, I've quickly whipped the camera past two light sources using a bulb exposure. The one on the right (happy face) is a tungsten source traffic light. You'll notice that the light output is constant from tungsten, that is, the streak is not interrupted. The sad face points out a sodium vapor street light which, like mercury vapor stadium lamps, pulses sixty times per second in the United States. You can see each one of these pulses as a bright patch in the streak, followed by a break.