Originally Posted by diego hammer
What Huffman tells us, that the color control does not work to solve problems in the saturation color space? Is that correct?
If that is correct, a question. Why manufacturers put color control?. Color control is a tool unnecessary in a projector?
Thank you very much
Color luminance can be a problem.
More than anything it's just legacy from the analog broadcast days.
When they added color to the black and white system, the color information was on a slightly different frequency than the B&W data. Basically the B&W is just the Y in YCrCb encoding, the color being the CrCb data. Well as the signal traveled 35 miles or more, the CrCb data could attenuate at a different rate than the Y data and would also shift it's phase slightly.
If you remember back to the old console style TV's they often had Color phase and Color amplitude, which eventually became just color and tint. Now that everything is all digital all the time, these two controls are completely redundant, our ability to correctly decode YCrCb data to RGB, shouldn't need any "tuning" parameters. But with the creative things Manufacturers do to sell sets with 13,000K white points, sometimes the color and tint can still help get a more accurate image.