High Dynamic Range (HDR) is a very important term in the world of digital imaging. It refers to the technologies used to capture and reproduce wide dynamic ranges of luminance between the light and dark areas of images. It is characterized by providing a significant increase in performance in this aspect, with respect to traditional video and photography techniques.
The vast majority of current displays use this technology, as it reduces (or completely eliminates) light bleeding when a black pixel is present. The greater the number of brightness levels that the device can reproduce at different intensities, the more information it will be able to retrieve.
In addition, other device technologies also affect HDR sharpness. For example, the ranges of an OLED display are much wider than those of a display using LED technology.
Displays with a low dynamic range (LDR) set their brightness values between 0.0 and 1.0. HDR technology is capable of exceeding the higher value, creating effects such as the well-known “light bloom”. Among the most popular HDR technology formats are HDR10, HLG or Dolby Vision.
