ADJUSTMENT
Color temperature and adjustment of white balance
When carbon is burnt, it develops various colors of light depending on the temperature. Natural light can be spec- ified by color temperature referring to the color developed
Blue sky
when carbon is burnt.
The light of 3,200K (K=Kelvin,
AWC
Rainy
Cloudy
Partly cloudy
The relationship between the color temperature of the light source and weather condition is indicated in the right fig- ure. Let’s study the difference of shooting an indoor object from shooting one outdoors. Studio are usually lighted with incandescent lamps and the color temperature of a white object in a studio is around 3,000K. The color tem- perature of a white object outdoors is around 6,500K. The former may look a little yellowish while the latter appears somewhat bluish when they are shot by a camera. However, human eyes do not recognize the color differ- ence between these objects even under different ambient lighting conditions because of their adaptability to light. The video camera reproduces color differences with high fidelity and the color of an object somewhat different from what appears to the human eyes.
Therefore, there is a need to adjust the white balance in order to correct their differences of color temperature.
NOTE: Color temperature outdoors may vary depending on weather conditions.
ATW
Fine
Fluorescent lamp
Halogen lamp
Tangsten lamp
Candle
