Come on. Ever used a color meter? Visual color of light is the same. Spectrum has nothing to do with it. Otherwise the film making, bulb making, and the entire movie industry would go nuts.
Come on. Ever used a color meter? Visual color of light is the same. Spectrum has nothing to do with it. Otherwise the film making, bulb making, and the entire movie industry would go nuts.
Well, the International Cinematographers Guild seems to disagree.
Misuse of the Kelvin scale has grown with the use of light sources that do not behave in a manner similar to the "Theoretical Black Body Radiator." I can appreciate the need to use the Kelvin scale to describe the proximity of these newer light sources' color temperature to the well established incandescent and day light equivalents. However, there is no excuse for abandoning the caution "Apparent Color Temperature. "Correlated Color Temperature" does not imply as clear a caution as "Apparent Color Temperature." Worse yet, it suggests an accurate measurement, which it is not.
When one encounters a light source with an 'interrupted spectrum"(all fluorescent and gas discharge lamps), problems with color reproduction will arise. Just look at the full spectral distribution chart for that lamp. The peaks, often in yellow green range and elsewhere will cause problems. Color filters can be used to eliminate spikes. However, if the color is not in its spectrum, it cannot be added with a filter. Colors that fall in this interrupted area of the spectrum will be dulled or lost. If using these light sources is a must, it is best to augment lighting with a full spectrum source.