What is HDR and Dolby Vision TV? Is it worth it to buy the equipment from the bajerami? – Virtual Poland

 
  In recent years we have seen a constant, gradual evolution of the quality of the image displayed by the TV – refined parameters such as resolution and color reproduction. However, the year 2016 is the time in which manufacturers have begun to focus on the reality of the contents displayed, and therefore became a key issue tonal range. What is HDR and whether you should buy a TV with this technology? What is Dolby Vision and how it differs from HDR10? It is worth to know before you choose to store.

 
 
  What is an expanded dynamic range (HDR)?

 
 Along with the increasingly frequent appearance of the standard Ultra HD has gained popularity as technology (HDR stands. High Dynamic Range) allows display with a tonal range – showing details in both very bright and dark areas. Display-enabled HDR allow you to give these higher degrees of light contained in the bright parts of an image without the “flattening”. In other words, give better what was seen on camera.

 
 
 
  Classic TV (SDR) versus modern with HDR

 
 
 Past displays SDR have limited brightness to approx. 100cd / m2, because technical limitations did not allow the screen to get a better result. In truth, modern TVs can show a brighter image, but film studios and graphics have not been applied until now such settings, so the brighter the display excessively brightening the image as a whole. That is why the appearance of the night sky księżyna result that black becomes gray and disappear detail.

 
 HDR technology is changing this approach and sets the maximum brightness much, much higher – up to 10 000cd / m2. That’s more than 100-fold increase! With the introduction of such changes on the level of standards, the content of which will go to our screen will not be excessively bright and tiring for the sense of sight. Only the details described at the stage of film production as the brightest will gain in intensity. As a result, the image will be closer to accurate.

 The use of technology expanded dynamic range (HDR) keeps the contrast and color of the original production to a much greater extent. Compatible display HDR is able to pick up more information about colors and contrast, and then process them for better picture quality – thanks to the expansion in its tonal range is much closer to reality as seen by the human eye.

 
 
 
  The new designation in the stores: Dolby Vision and HDR10

 
 
 Most commercially available standards HDR and HDR is HDR10 Dolby Vision. From the perspective of the picture quality, the HDR Dolby Vision is a big advantage. When HDR10 whole movie gets one, encoded information about tonal range. TV decodes it and once changing its settings. With Dolby Vision, each from a video is encoded with separate information. Knowing these parameters, the TV is able to give an image as predicted by the image, because it constantly modifies its settings.

 
 The difference between the two standards HDR comes down to the fact that HDR10 imposes a value of brightness director for the entire film, and richer Dolby Vision clarifies it independently for each frame.

  Best for this is OLED

 
 The night sky is not everywhere looks the same spectacular. Artificial light scattered in the atmosphere makes it very difficult to see the stars and other astronomical objects with low brightness. Matrix OLED allows for perfectly black image, dark as the night sky in locations distant from population centers, such as the North Pole is the center of the desert.

 
 
 High brightness of the screen does not always translate into higher image quality. Although the LCD matrix is ​​here slightly more powerful than the OLED does not allow for a full mapping HDR image, because the need for the backlight, which can not be turned off completely. In other words, LCD TVs have a limited ability to map dark subjects, because their screen can not be perfectly black.

 
 
 Organic light emitting diodes, which are independent light source, allow precise reproduce very low luminance value, including a perfect black. Thanks matrix OLED has the highest contrast ratio on the market and wider than the LCD’s tonal range, so you can clearly reproduce vivid detail even in the darkest areas of the image.

 
 In the assessments of many experts from around the world matrix OLED it is considered the ideal display. Pure Black allows for a richer palette of colors, pixels emitting make the panel ideal for displaying modern HDR image.

 
 jb