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2. Fluorescent-lamp formats - Wikipedia

   en.wikipedia.org/wiki/Fluorescent-lamp_formats

   Cool Daylight ≈85 6500, 6700 ECW, EDK, EDC 872, 874 Cool Daylight ≈85 7200, 7400 EDF, EDX 880 Skywhite ≈85 8000 900-series deluxe rare-earth phosphors tubes Numeric color code Color Approximate CRI Color temperature (K) 930 Warm white ≈95 3000 941 Cool white ≈95 4100 950 Natural Daylight ≈98 5000 965 Cool daylight ≈95 6500

3. Fluorescent lamp - Wikipedia

   en.wikipedia.org/wiki/Fluorescent_lamp

   The spectrum of light emitted from a fluorescent lamp is the combination of light directly emitted by the mercury vapor, and light emitted by the phosphorescent coating. The spectral lines from the mercury emission and the phosphorescence effect give a combined spectral distribution of light that is different from those produced by incandescent ...

4. Color temperature - Wikipedia

   en.wikipedia.org/wiki/Color_temperature

   For shooting with daylight film (calibrated to 5600 K) under warmer (low color temperature) light sources such as sunsets, candlelight or tungsten lighting, a bluish (e.g. #80A) filter may be used. More-subtle filters are needed to correct for the difference between, say 3200 K and 3400 K tungsten lamps or to correct for the slightly blue cast ...

5. Philips Hue - Wikipedia

   en.wikipedia.org/wiki/Philips_Hue

   Philips Hue is a line of color-changing LED lamps and white bulbs which can be controlled wirelessly. The Philips Hue line of bulbs was the first smart bulb of its kind on the market. [ 3 ] The lamps are currently created and manufactured by Signify N.V. , formerly the Philips Lighting division of Royal Philips N.V. [ 1 ] [ 4 ]

6. Standard illuminant - Wikipedia

   en.wikipedia.org/wiki/Standard_illuminant

   The CIE positions D65 as the standard daylight illuminant: [D65] is intended to represent average daylight and has a correlated colour temperature of approximately 6500 K. CIE standard illuminant D65 should be used in all colorimetric calculations requiring representative daylight, unless there are specific reasons for using a different illuminant.

7. Daylight harvesting - Wikipedia

   en.wikipedia.org/wiki/Daylight_harvesting

   Daylight harvesting systems are typically designed to maintain a minimum recommended light level. [1] This light level will vary according to the needs and use of the space; for example, the commonly recommended light level for offices is 500 Lux (or around 50 foot-candles) on the desktop.