"Contrary to popular belief, the "sharpness" setting on your TV doesn't affect the actual sharpness of the displayed image. True sharpness is determined by factors such as screen resolution, source material resolution, and contrast. Instead, the sharpness setting alters the artificial edge enhancement -- a processor-driven adjustment that can introduce unwanted noise and, ironically, distort details in the image. Also: How to clear your TV cache (and why you shouldn't wait to do it) Edge enhancement is designed to make on-screen objects more distinct by emphasizing the boundaries between them, theoretically creating a more lifelike image. However, this feature acts like a universal Instagram filter, potentially leading to an unnatural appearance in some media. While it may not be necessary to reduce sharpness to zero, it's generally recommended to turn it down significantly. For most TVs, a sweet spot between five to 10 percent can help achieve a balanced image, although you should experiment to find the level that looks best to you."
"An important setting to consider adjusting is Motion Smoothing, a frame interpolation feature created to reduce the blurring effect noticeable during fast-paced sequences. This feature aims to reconcile discrepancies between movie frame rates (usually 24 frames per second) and the TV's frame rate. When scenes filmed at 24fps are played on a higher frame rate TV, watchers might notice an effect known as "judder.""
Sharpness controls on TVs do not change true image resolution but instead apply artificial edge enhancement, which can introduce noise and distort fine detail. True sharpness depends on screen resolution, source material, and contrast. Lowering sharpness to a modest level (around five to ten percent) often yields a more natural image. Motion Smoothing uses frame interpolation to reduce blur and reconcile differing frame rates, but it can create unnatural motion and the so-called "judder" effect when 24fps content is shown on higher-rate displays. Disabling motion smoothing typically preserves cinematic motion and image fidelity.
Read at ZDNET
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