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Originally Posted by old_tv_nut
...you could get reasonable/acceptable (though not perfect) rendition of colors within the sulfide gamut by changing the matrix in the monitor. As a result, future monitors (Like the Tektronix Trinitron-based series) had a switch to turn the matrix adjustment on and off. You would set up the hue and chroma on color bars with the switch off, then turn it on to get reasonable flesh tones.
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Wayne: Did the capability of the broadcast industry to transmit NTSC gamut shrink with the advent of SMPTE standards?
Or, is it possible — maybe even likely — that the difference in green between the HDTV and CT-100 I saw is a lucky confluence of NTSC-gamut-capable broadcasting plus an overly enthusiastic graphic artist? Rather than some Pete eye-brain quirk!
Also, I won’t be content making CT-100 matrix adjustments using a DVD and a VCR modulator. I suspect that my best chance at a calibrated NTSC-modulated color bar signal is an over-the-air signal.
At one time, broadcasters around here transmitted color bars after they signed off. Nobody seems to sign off anymore. But I found Ch. 13, the PBS station, did so at three a.m. last weekend and transmitted over-the-air color bars.
But I slept right through it. So this weekend if they repeat the bars I’ll try again and use the R and G and B filters that come with Video Essentials to check the two sets. Which brings up another point. I didn’t see any traceable calibration stickers on the color filters…
