Overscan: You're Not Seeing the Whole Picture on Your TV.Purists will likely want to keep these features off, especially with high-quality content like from a 4K Blu-ray, but with some content it might help. Sit close, and see if it's adding noise, edge enhancement, or if it's making the image appear sharper. If your TV has these resolution/detail enhancement features, try out each to see what they do. For instance, Samsung, LG, and Sony have discussed using AI for their upconversion, which is how you get a decent-looking lower-resolution image on a high-resolution television. Part of this is due to the increase in overall processing power available in mid- and high-end TVs. The various steps in Samsung's AI Upscaling process. Others, of course, do more harm than good. Some of these can enhance the apparent detail without adding undue amounts of edge enhancement. These are usually deeper in the settings menus, or in separate "advanced" sections. Many TVs and some high-end projectors have processing features separate from the sharpness control. Read more: When to Bring In a Pro to Change Your TV Settings What about other visual controls? This was more common with older TV sets, though. Even turning the sharpness control to zero and going through every setting (and picture preset) in your TV, you still may see edge enhancement or other processing. 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. What's the best sharpness setting for my TV? While unenhanced images can look soft by comparison, especially at first, they're actually more detailed because they show fine textures in walls, pores on faces and tiny hairs - all of which can be hidden by too much edge enhancement. Most TVs have their sharpness controls turned up in the default picture modes, so we're used to this faux-detail look. See how much cleaner the left image looks compared to the enhanced.Įdge enhancement definitely gives the image a certain look: It can provide the appearance of more detail. Additionally, it often brings out grainy noise in other parts of the image. It may not seem like a big deal in this image, but with most content that halo is covering the actual detail. The problem is that the halo shouldn't be there - and it's replacing what should be. In some cases, the best setting is actually zero, while on most TVs the setting is best in the bottom 20% or so.īut what exactly is sharpness? An image that's too bright or garish is easy to understand, but sharpness takes some explaining. 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.) The sharpness control actually adds something called "edge enhancement," which can create overly harsh or "glowing" edges and diminish the fine resolution in the image you're looking at. It may be hard to believe, but the sharpness control on your TV doesn't actually "increase" the sharpness, detail or anything else associated with a good picture. 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 you can adjust on your TV, like brightness, contrast, and color.
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