However, most modestly priced LCD sets have an actual refresh rate of 60 Hz more expensive models generally have an actual - or "native" - refresh rate of 120 Hz, no matter what the box says.Īn illustration representing the difference between high and low refresh rates.įewer images per second mean that each image stays on the screen that much longer, so the next image depicts more of a jump, making the motion look artificial and blurry. There are many frame rates touted in TV spec sheets, from 60 Hz to 120 Hz to 240 Hz and higher. In theory, the more pictures per second, the more realistic the motion or video should appear. So if a refresh rate is 120 Hz, it means that the image is refreshed 120 times per second. The refresh rate is measured in hertz (named after physicist Heinrich Hertz, who did groundbreaking work on electromagnetism). By flashing a series of still images, the TV (just like film or animation) creates the illusion of motion. The refresh rate of a television represents the number of times per second that the image is flashed or refreshed on the screen. Here's a breakdown of what refresh rate really means, why it's important and why you should cast a skeptical eye on manufacturers' refresh-rate claims. A case in point is the refresh rate of TVs. Often what starts out as a simple, clear point of comparison gets muddied up in the world of technology "specsmanship." Even the best TVs can get marketed with inflated claims.
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