標(biāo)準(zhǔn)光源 定義
A Artificial illuminant such as a tungsten lamp at a color temperature of 2880°K
B Noon sunlight at 4874° K
C Average daylight (overcast sky) at 6774° K
D50 Typical bright daylight (overcast sky) at 5000° K
D55 Typical bright daylight (overcast sky) at 5500° K
D65 Typical bright daylight (overcast sky) at 6500° K
D75 Typical bright daylight (overcast sky) at 7500° K
F2 Cool white fluorescent lamp at 4200° K
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