Color temperature describes the spectrum of light which is radiated from a "blackbody" with that surface temperature. A blackbody is an object which absorbs all incident light-- neither reflecting it nor allowing it to pass through. A rough analogue of blackbody radiation in our day to day experience might be in heating a metal or stone: these are said to become "red hot" when they attain one temperature, and then "white hot" for even higher temperatures. Similarly, blackbodies at different temperatures also have varying color temperatures of "white light." Despite its name, light which may appear white does not necessarily contain an even distribution of colors across the visible spectrum.
The Basic Lighting Requirements Are As Follows:
Low contrast desired for light intensity. No dark spots.
Intensity at the meeting table 800-1400 Lux as measured with an Incident light meter.
Intensity at the back wall should be minimum 1/2 of that measured at table.
Color temperature: Depends upon wall color and camera. Typically 3200-3600 degrees Kelvin.
Block sun light from entering room. Do not setup with a window as the back wall.
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