字幕列表 影片播放 列印英文字幕 - My new TV has HDR What does that mean? So if you've been shopping for a television recently particularly a 4k television you've probably seen the letters HDR. So what do those mean? HDR stands for High Dynamic Range. Ultimately it means trying to represent colors in a more realistic, lifelike way. Something that traditional televisions weren't always the best at. With cameras and photography HDR is really referring to trying to get a camera to behave the way our eyes do. Our irises can expand and contract as light levels change. But cameras can't do that. You set a settings and you take a picture. You can change the setting and take another picture but you're kinda stuck with what you get. HDR technology takes a series of pictures at different luminosity levels and then combines them all into a mashup image. Now with displays like this we're really looking at something called Nits. Nits is a unit of measurement. It's a measurement of luminosity which in itself is the brightness level from a source of light. So, when you are shopping for a TV you are literally nit picking. Anyway, luminosity relates to two different concepts. Contrast, which is the difference between your brightest whites and your darkest black colors on a television screen. And color representation. The greater the number, the greater the range. The better color representation you'll get the more vibrant the images are. In fact people have said the jump from 1080 resolution to a 4K resolution wasn't really that noticeable until HDR technology started to get rolled into it. There are a couple of things you need to know before you go out and buy your 4K HDR set. One is that content is somewhat limited. You can get certain Amazon shows that have HDR content and Sony is rolling out some content in HDR. But it's not everywhere and it's not magically going to turn your old television shows into spectacular displays. Another thing to remember is that there are a lot of companies working on HDR right now. So there's some competing standards at play here. But this is the future of high resolution. I'm sorry, ultra high resolution displays. So when you are looking for that next television look for those three letters and then tell somebody hey, I know what that means. Guys, you've got to check back to now.howstuffworks.com every single day because we are going to have cool stories about the latest in tech, science, pop culture and just the weird stuff going on in the world. So I wanna see you there. now.howstuffworks.com.
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