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For HDR, this number increases to around 1,000–10,000 nits. [ 1 ] [ 5 ] HDR can represent darker black levels [ 2 ] and more saturated colors. [ 1 ] The most common SDR formats are limited to the Rec. 709 / sRGB gamut, while common HDR formats use Rec. 2100, which is a wide color gamut (WCG).
PQ10 refers to an HDR format that uses PQ, 10-bit and Rec. 2100 color primaries without having any metadata. [3] HDR10 is technically limited to a maximum of 10,000 nits peak brightness, however common HDR10 contents are mastered with peak brightness from 1,000 to 4,000 nits. [5] HDR10 is not backwards compatible with SDR displays.
[23] [24] The HDR display must have either a peak brightness of over 1000 cd/m 2 and a black level less than 0.05 cd/m 2 (a contrast ratio of at least 20,000:1) or a peak brightness of over 540 cd/m 2 and a black level less than 0.0005 cd/m 2 (a contrast ratio of at least 1,080,000:1).
"Between 0.0001 and 0.00001 nits" "Sony claims an OLED contrast range of 1,000,000:1." [1] Peak luminosity Dependent on the anode voltage and area of the scanning region [citation needed] 200– 4,000 cd/m 2 [2] [3] 50– 200 cd/m 2 [citation needed] 100– 1500 cd/m 2 [4] often significantly varying based on average picture level [5] Color ...
Dolby Vision is a set of technologies developed by Dolby Laboratories for high dynamic range (HDR) video. [1] [2] [3] It covers content creation, distribution, and playback.[1] [4] [5] [6] It includes dynamic metadata that define the aspect ratio and adjust the picture based on a display's capabilities on a per-shot or even per-frame basis, optimizing the presentation.
HDR10+, also known as HDR10 Plus, was announced on 20 April 2017, by Samsung and Amazon Video. HDR10+ updates HDR10 by adding dynamic metadata that can be used to more accurately adjust brightness levels up to the full range of PQ code values (10,000 nits maximum brightness) on a scene-by-scene or frame-by-frame basis.
The candela per square metre (symbol: cd/m 2) is the unit of luminance in the International System of Units (SI). The unit is based on the candela, the SI unit of luminous intensity, and the square metre, the SI unit of area.
FP16 blending can be used as a faster way to render HDR in video games. Shader Model 4.0 is a feature of DirectX 10, which has been released with Windows Vista. Shader Model 4.0 allows 128-bit HDR rendering, as opposed to 64-bit HDR in Shader Model 3.0 (although this is theoretically possible under Shader Model 3.0).