Refresh rate is one of the more confusing aspects of TV technology, and TV makers don't do much to explain it. In fact, they often double it. Refresh rate is a number that specifies how many times per second the image on your TV changes. With most TVs it's 60, though it's rare you'll ever see a TV with that number listed. Instead, manufacturers use different technologies, such as the soap opera effect and black frame insertion, to claim a higher number. Sometimes those claims are justified, sometimes they aren't. Higher refresh rate claims with numbers like 120, 240, and higher are common, but not always accurate. In fact, no matter what number you see listed with a 4K TV, no 4K TV has a native panel refresh rate higher than 120Hz. As we'll explain, though, a number higher than 120Hz doesn't necessarily mean the claim is false. Here's the basics: Refresh rate is the number time times per second (written in hertz, or Hz) a TV refreshes its image.Movies are almost always filmed … [Read more...] about The truth about 4K TV refresh rates
About 4k tv
Welcome to the land of high-definition diminishing returns, also known as 4K television. Or at least that's one way of looking at the myriad new ultra-high-definition displays that all the big names and even some lesser-known companies are introducing this week at CES. In case you're out of the loop on what 4K is, it's a display standard that uses roughly 4,000 pixels horizontally across the screen; it has four times the number of pixels of 1080p and double that of a 13-inch MacBook Retina display. If the hype around those now old-timey-seeming retina displays is true, then only a robot should be able to tell the difference between 2K (Retina-level resolution) and 4K. That begs the big question about all these bleeding-edge panels: why should we care? Let us know in the poll just how much 4K has piqued your interest. … [Read more...] about Do you really care about 4K TVs? (poll)
Ultra HD, colloquially known as "4K," is everywhere on TV shelves and online this year. Previously restricted to only high-end models, 4K resolution has become so inexpensive that your next 50-inch or larger TV will probably be 4K.What does it mean? Does it matter? Why should I care? Here are the basics -- a cheat sheet if you will -- about this advancement in TV technology.Higher than HD resolution, and possibly more To put it simply, Ultra HD is a resolution greater than HD. Resolution on TV screens consists of physical pixels, the tiny dots of light that together form the picture. Look closely (you may need a magnifying glass) and you can see them, but move back to a typical seating distance and they blend together. Today's 4K TVs almost all have a horizontal resolution of 3,840 pixels and a vertical resolution of 2,160 pixels. A single line of pixels across the screen is 3,840 pixels long, and a line of pixels down the screen is 2,160 pixels long. Multiply those numbers and you … [Read more...] about What you need to know about 4K TVs
In a small room away from the main convention center at the CEDIA Expo, LG showed off its upcoming 84-inch 4K LCD, the LG 84LM9600. I got a close-up look at the new ultraresolution panel, got a lot of questions answered, and got a rough idea what we can expect when it starts shipping next month. Curious? I was too. 1st 4K TV impressionsWhy 4K TVs are stupid" and "Why 4K TVs are stupid (still)." For those of you who read the articles, I'm very specific in my complaint about 4K TVs: it's that in the sizes most people buy, and at the distances most people sit from a TV, 1080p is largely unnecessary, making 4K ridiculous overkill. But 84 inches is not a "normal" size. At that size, it's far more likely you'd be able to see the added resolution with 4K. However, at the demo, LG wasn't showing any 4K material. Instead it showed upconverted 1080p content, which, let's be honest, is going to be the vast majority of the content this TV will get throughout its life. Unfortunately, with this … [Read more...] about Hands-on(ish) with LG’s 4K TV
Ultra high-definition (4K) technology has loomed over the television industry for years. Just over a decade ago we made the jump from standard definition (480p resolution or lower) to high-definition (720p resolution or higher), and many people bought new TVs in the process. Now that it's clear 4K is here to stay, it's time to decide if another upgrade is in order. 4K, which is recognized as 3,840-by-2,160-pixel resolution for televisions, boasts four times the amount of pixels as 1080p displays. 4K televisions have been trickling into the market slowly, seeing similar curves of both adoption and price that HDTVs once had. A few years ago, 4K televisions were incredibly expensive, lacked a standardized format for transmitting video, and very little 4K content was actually available. A lot has changed since then. At the end of 2015, we can freely recommend purchasing a 4K television as your new big screen. The technology and market have matured to the point that it … [Read more...] about Should You Buy a 4K TV Now or Wait?