It's possible, though rare, that you have a TV with permanent edge enhancement. There's a sweet spot with any TV, it's just a matter of finding it.Ī setup disc, like the Spears & Munsil UHD HDR Benchmark, has patterns that will make it easier to find the exact sharpness level for your specific TV.
If the image suddenly looks blurry, that's definitely too low. This might be done to offer a way to decrease the noise in lower-quality sources, but I'd be shocked if it's ever used for that purpose.
Some TVs actively soften the image when you turn the sharpness control to zero (or even below 50 in some cases). Ideally, you'll be able to find the spot that offers the most actual detail and the least additional noise. Does the fine detail disappear? If so, that's too low. Want to fine-tune it? While watching a variety of content, especially 4K if you have a 4K TV, turn the control down from that starting point and see what happens. Whatever that number is, it's a good place to start. The easiest way to check is to switch your TV to the Movie or Cinema picture preset, and see where the sharpness control is in that mode. Read more: How to set up your TV and when to bring in a pro to change your TV settings An image that's too bright or garish is easy to understand, but sharpness takes some explaining. After all, who wants a picture that's dim, colorless and dull, right? In reality, maxing out any of those adjustments can ruin your picture, making it less accurate and limiting the potential of the best TVs. Turning them all up might seem like a great idea. Sharpness is one of the many picture settings on your TV, like brightness, contrast, and color. Sometimes the best setting is actually 0, while on most TVs the setting is best in the bottom 20% or so. That means when your sharpness is set too high, you could lose some of the crisp detail of that fancy 4K TV. (If you want better TV, take a look at the best picture mode and try changing these settings.) Instead, sharpness control adds something called "edge enhancement," which can diminish the fine resolution in the image you're looking at. Despite the name, the sharpness control on your TV doesn't actually "increase" the sharpness, detail or anything else associated with a good picture.
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