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If you want to learn the math of how color and temperature are correlated in thermal radiation, look at the excellent article on Wien's displacement law. (Spoiler: it's peak wavelength of light = a constant / temperature or peak frequency of light = a different but related constant * temperature) 1) If one object is appearing blue and other ...
Notice that the "Color Temperature Auto" and "Color Temperature Measured" values are identical. That indicates that when the camera is set to "Auto WB" the measured values for Red, Green, and Blue are used to calculate the color temperature and tint that are then applied to the processed image (either the jpeg preview attached to the raw file ...
Baby Universe (#8bb1ff): The calculated color for extremely high temperatures, roughly rgb(139, 177, 255). Python Implementation: The following Python code calculates the RGB value for a blackbody at an extremely high temperature (e.g., (10^7) K). The result is a pale blue, indicative of the color limit as temperature approaches infinity.
The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of comparable hue to that of the light source. Black body radiators are an idealized concept, that radiate an energy spectrum with a peak intensity at a frequency that depends on the the temperature of the black body radiator.
$\begingroup$ In addition to the angle of the sun in the sky and the resulting thickness of the atmosphere it passes through, cloud cover, the amount of water vapor in the air, the amount and types of particulate matter suspended in the air, as well as the type and color of ground cover reflecting the sunlight all play a significant role in the color temperature of sunlight in a particular ...
\$\begingroup\$ I am curious how one can perform white balance like it is done with Lightroom, where you have a color temperature as well as color tint. Those two sliders align perfectly with the two planar Lab space axes, as well as with CIE-based white point adjustment formula that can be found online.
1. Colour temperature is related to black-body radiation, in theory the distribution of wavelengths of a light source of a certain colour temperature should resemble that of a black body of that temperature. So colour temperature is not exactly related to a wavelength, but to a distribution of wavelengths. You can calculate the wavelength of ...
Color-temperature is measured in kelvins and corresponds to the temperature at which a certain metal must be heated to emit light of that color. That is why lower temperatures (say 3000 K) give off warm (yellow-orange) light and that high temperatures (9000 K) give off color (blueish) light. White-balance is the process of canceling the effect ...
63. Moonlight has a color temperature of 4100K, while sunlight has a higher color temperature of more than 5000K. But objects illuminated by moonlight don't look yellower to the eye. They look bluer. This holds for indoor scenes (like my hall) and for outdoor. I find it counter-intuitive that moonlight has a lower color temperature.
Film doesn't really have a "specific" color temperature, but there is more generic color temperature classifications: daylight and tungsten. Most film is daylight balanced (somewhere around 5600K); experiment with various emulsions and you'll see some warmer and cooler variants, but I don't think you'll find an actual color temperature for any ...