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White balance
The color of light reflected off a subject changes with the color of the main light source. The white balance setting on a digital camera adjusts the brightest part of a scene so it appears white. The human eye sees white objects as white regardless of the light source; a digital camera does not.
Digital cameras are set to automatic white balance by default. Automatic white balance does a very good job under most circumstances. However, there are times when white balance needs to be changed manually to match the inside or outside lighting in order to obtain more true-to-life colors in a photo.
Preset white balance settings:
- Daylight - for direct sunlight
- Cloudy - for shady, overcast skies
- Fluorescent - for use under fluorescent lighting
- Incandescent/tungsten - for use under standard light bulbs and some types of fluorescent lighting
- Flash - for light produced by the built-in camera flash
Photos of a white door were taken under the same lighting conditions (standard light bulbs). Automatic white balance was used to shoot the image on the left image. Incandescent white balance setting was use for the image on the right.