Task: Take 3 photos of each location, varying the white balance settings as follows: automatic WB, daylight WB and fluorescent WB. Compare the results
Fluorescent Lights are a very common type of lighting. They appear white in colour to our eyes because they glow at different wavelengths and spread the spectrum of the lamp’s light. However the glass tubes are coated with a fluorescent coating, so they look green when photographed. However Freeman (2004) warns that the amount of green varies depending on the light manufacturer. Therefore the camera’s fluorescent white balance setting may not completely remove the green colour cast. Camera manufacturers have got around this problem by including the option to manually set the camera’s white balance based on colour temperature.