What is High Dynamic Range (HDR)?
High dynamic range televisions can display a much wider range of brightness and colour than the TVs we’re used to. The result is punchy, vivid pictures that look much more like the way our eyes see the real world. The 2019 Panasonic TV range leaves no stone unturned in its quest to deliver a thrilling HDR experience. For instance, its OLED TVs now go brighter without losing their beautifully rich black colours, while its LCD TVs use sophisticated backlight controls to deliver HDR’s huge contrast range with spectacular impact.
HDR technical background
The film industry realised early on that it makes sense to standardise technical processes and introduce binding standards. The goal was to provide the cameraman, the post-production editor, the photographer, the cinema and TV stations with a technical system that guarantees a consistent reproduction quality of the film content. The generic term for this is Standard Dynamic Range (SDR). It was defined using the Rec.709 colour space and a luminance of 100 to 300 nits. Due to the technical limitations of the recording and playback devices SDR remained the uniform standard for picture quality for a long time.
High Dynamic Range (HDR) means that the standard has been virtually revolutionised (see comparison below). It provides an above-average brightness difference between black and white, whichprovides an above-average contrast. Also, the color spectrum is much wider. The pictures become more realistic and more detailed. For example, with 4K HDR televisions, you can still see fine details in clouds in the sky that were previously lost because of the limited contrast range.
The expressible bright and dark parts are expanded to achieve more natural images:
What is dynamic metadata?
With static metadata (HDR10), the TV adjusts the signal for the entire movie based on the scene with the highest brightness. For dynamic metadata (HDR10+ and Dolby Vision™), the TV adjusts the signal scene by scene (per frame sequence). This allows the TV screen to more precisely match the content to your own panel characteristics and to display all scenes with optimal saturation and brilliance.
HDR10+ and Dolby Vision™ deliver true-to-life contrast and colour on a scene-by-scene dynamic metadata optimisation:
Metadata optimisation for the whole film only (static).
HDR10+ and Dolby Vision™: metadata optimisation for each scene (dynamic). Enjoy HDR performance with many more scenes.
Some parts of scenes look dimmer.
HDR10+ and Dolby Vision™: more accurate colour and contrast.
What is HDR10+?
HDR10+ is an open, royalty-free dynamic metadata platform for High Dynamic Range (HDR), created by 20th Century Fox, Panasonic and Samsung. Together, the three companies have formed a licensing entity that began licensing the HDR10+ platform in January 2018.
The higher contrast and smoother gradation that come with HDR10+ technology heighten your home cinema experience. Each scene undergoes unique Panasonic processing that leverages metadata dynamically to deliver true-to-life contrast and colours. Tone mapping is applied to each scene, instead of the whole film, to make pictures come to life.
What is Dolby Vision™?
Dolby Vision™ is an HDR format from Dolby Laboratories that can be optionally supported by Ultra HD Blu-ray Disc™ media and streaming video services. It requires a royalty fee because it is a proprietary format. Dolby Vision™ uses the same dynamic metadata as HDR10+.
Like the HDR10+ format, Dolby Vision™ brings exceptional colour, stunning contrast and extraordinary brightness to the screen – from Blu-ray™ discs to video streaming. It also uses dynamic metadata for scene-by-scene and frame-by-frame optimisation of pictures. This ensures an enhanced dynamic effect throughout the entire movie or TV show
What is Hybrid Log Gamma (HLG)?
Hybrid Log-Gamma (HLG) is a High Dynamic Range (HDR) standard that was jointly developed by the BBC and NHK. Using Hybrid Log-Gamma, broadcasters can broadcast one stream of content which will be displayed in HDR on HDR compatible TVs and in SDR on SDR TVs. The latest Panasonic TVs support HLG so you can enjoy a variety of HDR content.
Hybrid Log Gamma (HLG) Photo support
HLG Photo allows images to be shot with a wider dynamic range. Rich, precise colour expression as close as possible to visual memory is enabled by reproducing both glaring lights and dark shadows that were likely to be overexposed or underexposed.
HLG Photo produces images as an HSP file. The user can play back these vibrant images on the latest Panasonic HLG-compatible 4K TV via an HDMI cable connection or other HLG-compatible devices. When the HSP file is in 4K resolution, the TV can directly decode it via USB.
A new photo viewing style on an HDR-compatible screen:
HLG Photos expresses images in a sparkling, dazzling light:
Natural light cannot be accurately expressed.
Subjects that tend to wash out are naturally rendered.
Colours are inaccurate and details are lost.
Enjoy highly textured expression with excellent brightness.
Seamless connectivity thanks to the internal HLG Photo format support:
Connect the camera and HDR-compatible devices with an HDMI cable.
Download and directly output images on devices that support the HSP format.
HSP cannot be printed. Presently, HSP files cannot be opened on a computer (Windows).