The highlights-the brightest parts of an image-can be brighter, more colorful, and more detailed. No current display is able to reproduce the maximal range of brightness and colors that can be represented in HDR formats. The benefits of HDR depend on the display capabilities, which vary. They can constrain themselves to the limits of SDR even if the content is delivered in an HDR format. Content creators can choose to what extent they make use of HDR capabilities. HDR contents are often limited to a peak brightness of 1,000 or 4,000 nits and P3-D65 colors, even if they are stored in formats capable of more. In practice, HDR is not always used at its limits. 709/ sRGB gamut, while common HDR formats use Rec. The most common SDR formats are limited to the Rec. HDR can represent darker black levels and more saturated colors. For HDR, this number increases to around 1,000–10,000 nits. SDR formats are able to represent a maximum luminance level of around 100 nits. Standard dynamic range (SDR) is still based on and limited by the characteristics of older cathode ray tubes (CRT), despite the huge advances in screen and display technologies since CRT's obsolescence. By contrast, HDR improves the perceived fidelity of the existing individual pixels.
1.1.1 Preservation of content creator intentīefore HDR, improvements in display fidelity were typically achieved by increasing the pixel quantity, density (resolution) and the display's frame rate.2100 and all common HDR formats require HDR to be delivered with wide color gamuts (WCG). HDR-TV also improves color gamut, as Rec. HDR-TV is a part of HDR imaging, an end-to-end process of increasing the dynamic range of images and videos from their capture and creation, to their storage, distribution and display. HDR-TV was first used in 2014 to enhance videos, and it is now also available for still pictures. Not all HDR displays have the same capabilities, and HDR content will look different depending on the display used. It does not improve a display's intrinsic properties (brightness, contrast, and color capabilities). HDR allows compatible displays to receive a higher quality image source. HDR changes the way the luminance and colors of videos and images are represented in the signal, and allows brighter and more detailed highlight representation, darker and more-detailed shadows, and a wider array of more intense colors. It is contrasted with the retroactively-named standard dynamic range (SDR). High-dynamic-range television ( HDR or HDR-TV) is a technology that improves the quality of display signals. Not to be confused with the HDR capture technique used in photography, or with other uses of the terms "high dynamic range" and "HDR".
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