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Old 11-26-2019, 08:42 AM
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dtvmcdonald dtvmcdonald is offline
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Yesterday I made one more try at doing the settings on my CT-100. Since I have
a carefully calibrated Sony 55 inch LCD TV, I decided to compare them. I have things
arranged so that the output of my NTSC modulator goes back into my OTA antenna
distribution. So I checked that the Sony produced the same color and gamma on both
digital and remodulated NTSC of the same OTA signal. For color they are identical,
and gamma is quite close. Then I went to adjust the CT-100 to be the same.

However ... it already was the same color as the modulated signal! Even the gamma
was very close. The only adjustment needed was a tiny tweek of the blue background,
really tiny. (Both sets had been calibrated for "sunny clear day" color temperature.)

Every color all around the CIE chart was the same. This was never achieved with the old 15GP22.

I also did another test. Since the Sony is LCD, it produces 100% polarized light.
Therefore brightness can be reduced simply by looking through a large sheet of tilted
Polaroid film, and the amount of reduction calculated from the angle, measured by
a protracter. This test says the Sony is about 4.5 times brighter than the CT-100.

Last edited by dtvmcdonald; 11-27-2019 at 08:31 AM.
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