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The "sharpness" control on newer color TV sets was never able to increase the resolution of a set, but only to boost the perceived detail, by increasing the high-frequency gain in the video amplifier. Generally, it should be set to 25% from the lowest setting or lower, to avoid "edge enhancement"/ringing on high-contrast changes in video content.
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Chris
Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did."
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