Quote:
Originally Posted by lnx64
My hybrid hitachi is giving me hell in the red department.. So the golden yellow issue is apparently due to the color decoding overdriving the red.
Thing is, on a greyscale test, it's perfectly at 6500k. The blues and green are pretty spot on, but the reds are actually driving MORE than if it was a white background.
What could be causing this?
|
The overdriven reds are deliberate to get the right spread of hues between red and green with modern phosphors. However, there is no R-Y gain choice or demodulator angles choice that is perfect for all colors, so each manufacturer made their own choices - and sometimes it changed from model to model. To complicate things, camera design changed during the years to get better looking color on monitors with new phosphors as well. So NTSC colorimetry has always been out of control.
PAL (and now HDTV) had the advantage of having the newer phosphors before they started, so the color could be compensated correctly in the camera while straight demodulators were used in the receivers.