If you’ve read some reviews or articles about Best 4K TVs recently, you probably discovered references to your technology known as HDR (High Dynamic Range). As 4K Ultra HD takes over as the new standard for TV screen resolution, we now have enough pixels to show very realistic picture detail. Today, television manufacturers and content manufacturers are focused on”better” pixels — making each pixel perform longer to produce images that look as vivid and life-like as you can.
Since TV pros consider contrast as the main determiner of display quality, increasing TV’s comparison range has become the top priority. And that’s what HDR is about — expanding the number between the darkest blacks and also the brightest whites in a television picture.
HDR’s enhanced image quality is readily observable from across an area — you may not need to get close up to see it.
The contrast and brightness standards for routine SDR (Standard dynamic-range ) TVs, in addition to for current broadcast, cable, and satellite TV signs, are all based on the limited capabilities of old-school tube TVs.
Now’s flatscreen TVs can create much brighter images than tube TVs, but they are restricted to the narrow dynamic selection of TV signals. HDR does away with those limits, radically improving your home viewing experience. In actuality, an HDR enhanced TV film can surpass what we see in a picture theatre in a few manners.
What is HDR Television?
The first thing to understand is that HDR to get TVs has nothing to do with the HDR in your own smartphone or camera. HDR in your camera/phone takes a few images and produces a composite blending the very best areas of each image. HDR for TVs expands the comparison ratio of this display, either by making blacks black&whites brighter or even both.
When pictures or TV shows are filmed, the contrast range is very wide. But if that content is processed to become streamed or broadcast to get television screening, or placed on a DVD or blu ray disc, the contrast range is squeezed to fit the limited array of SDR TVs. By eliminating these limitations, HDR-compatible TVs and articles make shows and movies look much closer to the way the director intended.
HDR is an “encode-decode” platform. The expanded-contrast HDR advice is encoded as “metadata” from the video signal. Metadata isn’t actual video; it’s additional information or instructions that ride in addition to the signal if you are watching a streamed show from Amazon or an UltraHD Bluray disk drive.
When viewed within an HDR-capable TV, the set’s integrated decoder recognizes and reads the metadata, allowing the television to re-create the full HDR image, using superior contrast and color.
Non-HDR TVs simply blow off the metadata and show the normal un-enhanced SDR image. A few HDR TVs will include video processing built to”upconvert” non-HDR articles to HDR. The outcome isn’t as impressive as authentic HDR but has a number of its looks.