• What HDR means for PC gaming
    7 replies, posted
[url]http://www.pcgamer.com/what-hdr-means-for-pc-gaming[/url]
Good article on HDR and what the "new" definition / use of the term means. The previous checkboxes for HDR aren't true HDR, but it's a simulation using image exposure adaptations. The image data is internally rendered on a high dynamic range with values going beyond black and white, while the frames rendered to the screen is displayed in the standard RGB space ranging from black 0 to white 255. Over time, if the camera / character looks at an area darker or brighter than the current exposure, the frames rendered change exposure over time to show the darker or brighter areas in more detail. The camera HDR example is a bit different in that instead of taking a high dynamic range and showing the chosen exposure, leaving either bright areas pure white or dark areas crushed black, it takes multiple exposures and balances them all out showing all the details in bright and dark areas.
It's kinda hard to get an idea of what difference it would make when on a standard monitor.
[QUOTE=_Axel;51184281]It's kinda hard to get an idea of what difference it would make when on a standard monitor.[/QUOTE] Trying to find a good image example, but basically take a good image, and increase the contrast without losing the details in the bright and dark areas. You'd also be getting a wider range of colours which reduces colour banding.
[QUOTE=Daemon White;51184324]Trying to find a good image example, but basically take a good image, and increase the contrast without losing the details in the bright and dark areas. You'd also be getting a wider range of colours which reduces colour banding.[/QUOTE] Alright, no color banding is pretty easy to imagine. Wouldn't the higher luminance be uncomfortable though? I imagine a screen with twice or thrice the luminance would be tiring on the eyes after a while.
[quote]For starters, HDR specs require a minimum 1000 cd/m2[/quote] I don't get this, googling my monitor brightness comes up with 436cd/m2 at 100% brightness and it hurts to look at for more than 20 minutes, I have to bring it down to 30%. Are the measurements different or are HDR displays just really fucking bright?
[QUOTE=I_love_garrysmod;51184470]I don't get this, googling my monitor brightness comes up with 436cd/m2 at 100% brightness and it hurts to look at for more than 20 minutes, I have to bring it down to 30%. Are the measurements different or are HDR displays just really fucking bright?[/QUOTE] I imagine its more to do with the overall luminance range. If the entire screen is pumping out 1000cd you'll probably melt your face off. With HDR on a monitor capable of 1000cd/m2 you're looking at a situation where the screen can, if required, show you detail in the extremely bright areas while also showing you detail in the dark areas. So the tiny specular highlights might be at 1000cd, but the majority if the rest of the image will be far lower.
[QUOTE=_Axel;51184343]Alright, no color banding is pretty easy to imagine. Wouldn't the higher luminance be uncomfortable though? I imagine a screen with twice or thrice the luminance would be tiring on the eyes after a while.[/QUOTE] Maloof's example is a good explanation. Just because they can go to 1000 cd/m2, doesn't mean they will.
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