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- Video
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HDR technology, (High Dynamic Range), appeared a long time ago for the photography sector and then for the video game sector, although, for the mobile phone, television and projector market, it was at the beginning of 2015 when it began a generalize. Since then, we have seen how multiple domestic elements related to the image have been incorporating it. This system, based on the rendering of the image, consists of imitating in a certain way the functioning of the iris of the human eye. Our eye has the ability to adapt to the level of light necessary to observe certain things, thus, in an open place or with a lot of light, the iris tends to close, while in very dark places, after some time, our iris opens to receive the maximum light possible and to be able to see objects that are in a place with almost total darkness more easily, thanks to this, we managed to see the northern lights, for example.
How does HDR technology work?
In traditional photography, when we take into account the factor of light, there is a problem, since a good photograph can have very dark or very burned areas (excess light), degrading the visual beauty of the image. HDR expands the luminance range, generating more intensity levels, analyzes these levels and optimizes them, offering a higher level of detail and achieving more intense whites and deeper blacks, improving the richness of colors and the entire gray scale, with what we managed to perceive more details in the dark areas of the image.
What types of HDR are there?
On the one hand, we have the native formats such as HDR, HDR10, HDR 10+, Advanced HDR, HDR 1000, HLG and Dolby Vision. On the other hand, we have some other non-native format such as the HDR Converter, (which achieves the result by scaling, digitally emulating the missing information) or the HDR Technicolor.
Of all those mentioned, it seems that Dolby Vision is the most complete, in fact, it is the only one compatible with all the others, but HDR10 + is very close in properties and they are continually evolving to Pro versions that offer even better performance.
Can I enjoy HDR at home?
For that, the most important thing is the content to be played, it must have been recorded with one of the HDR formats and it is essential that its resolution is UHD or 4K, that is, we will never be able to watch a movie or TV series with HDR, be it in physical blu-ray format or in streaming, if it is not UHD or 4K. Obviously, our player and the television or projector must also be compatible, including HDMI cables.
The vast majority of 4K movies, recorded on Blu-ray, come with HDR and many of the series or movies that we can watch in streaming, through providers such as Netflix or HBO, also include some of the formats in HDR.
Click on the linked words if you want to know our recommendations on HDR-compatible projector televisions and HDMI cables.