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The color temperature scale describes only the color of light emitted by a light source, which may actually be at a different (and often much lower) temperature. [1] [2] Color temperature has applications in lighting, [3] photography, [4] videography, [5] publishing, [6] manufacturing, [7] astrophysics, [8] and other fields.
5000 K Horizon daylight, Tubular fluorescent lamps or cool white/daylight compact fluorescent lamps (CFL) 5500–6000 K Vertical daylight, electronic flash: 6200 K Xenon short-arc lamp [1] 6500 K Daylight, overcast 6500–9500 K LCD or CRT screen 15,000–27,000 K Clear blue poleward sky
Japanese color code Numeric color code Alphabetic color code Color Approximate CRI Color temperature (K) N/A 29 WW Warm white ≈52 3000 WW 35 W White ≈56 3500 W 33 CW Cool White ≈62 4000-4300 N/A 25 N/A Neutral/Universal White ≈75 4000 N N/A N/A Natural Daylight ≈70 5000 D 54 D Daylight ≈75 6500 Deluxe halophosphate tubes
A list of standardized illuminants, their CIE chromaticity coordinates (x,y) of a perfectly reflecting (or transmitting) diffuser, and their correlated color temperatures (CCTs) are given below. The CIE chromaticity coordinates are given for both the 2 degree field of view (1931) and the 10 degree field of view (1964). [1]
Cats are limited in their perception of color. Human eyes have 10 times more cone cells than feline eyes, meaning we can see a larger range of colors than cats, according to Purina.
These developments paved the way for the development of new chromaticity spaces that are more suited to estimating correlated color temperatures and chromaticity differences. Bridging the concepts of color difference and color temperature, Priest made the observation that the eye is sensitive to constant differences in "reciprocal" temperature ...
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The CIE 1960 UCS does not define a luminance or lightness component, but the Y tristimulus value of the XYZ color space or a lightness index similar to W* of the CIE 1964 color space are sometimes used. [2] Today, the CIE 1960 UCS is mostly used to calculate correlated color temperature, where the isothermal lines are perpendicular to the ...