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What is HDR, anyway?

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Re: What is HDR, anyway?

#301

Post by [deleted] »

BlueTemplar wrote: post #232
kllrnohj wrote: post #50

Earlier quoted context omitted.

> To me, HDR feels like the system is ignoring my screen brightness settings. On both Android & iOS/MacOS it's not that HDR is ignoring your screen brightness, but rather the brightness slider is controlling the SDR range and then yes HDR can exceed that, that's the singular purpose of HDR to be honest. All the other purported benefits of HDR are at best just about HDR video profiles and at worst just nonsense bullsh…

It isn't just about the brightness (range). In practice the 'HDR' standards are also about wider color gamuts (than sRGB), and (as mentioned in parallel) packed into more bits, in a different way, so as to minimise banding while keeping file sizes in check.

[deleted]

Re: What is HDR, anyway?

#302

Post by cubefox »

dpacmittal wrote: post #299
cubefox wrote: post #65

Earlier quoted context omitted.

HDR support in Chrome (Android) looks still broken for me. For one, some of the images on the blog have a posterization effect, which is clearly wrong. Second, the HDR effect seems to be implemented in a very crude way, which causes the whole Android UI (including the Android status bar at the top) to become brighter when HDR content is on screen. That's clearly not right. Though, of course, this might also be some i…

Which Android phone are you using?

This one: https://gsmarena.com/motorola_edge_30_ultra-11206.php

Re: What is HDR, anyway?

#303

Post by baxuz »

Terr_ wrote: post #243

> Our eyes can see both just fine. This gets to a gaming rant of mine: Our natural vision can handle these things because our eyes scan sections of the scene with constant adjustment (light-level, focus) while our brain is compositing it together into what feels like a single moment. However certain effects in games (i.e. "HDR" and Depth of Field) instead reduce the fidelity of the experience. These features limp alo…

These effects are for the artistic intent of the game. Same goes for movies, and has nothing to do with "second hand movies recorded on flawed cameras". or with "realism" in the sense of how we perceive the world.

Re: What is HDR, anyway?

#304

Post by JKCalhoun »

gyomu wrote: post #5

As a photographer, I get the appeal of (this new incarnation of) HDR content, but the practical reality is that the photos I see posted in my feeds go from making my display looking normal to having photos searing my retinas, while other content that was uniform white a second prior now looks dull gray. It's late night here so I was reading this article in dark mode, at a low display brightness - and when I got to th…

I experience the same thing you do — but my take on it is different. Being hit with HDR images (and videos on YouTube), while unsettling, makes me then realize how just damned dull the SDR world I had been forced to succumb to has been.

Let the whole experience be HDR and perhaps it won't be jarring.

Re: What is HDR, anyway?

#305

Post by robertlagrant »

Terr_ wrote: post #243

> Our eyes can see both just fine. This gets to a gaming rant of mine: Our natural vision can handle these things because our eyes scan sections of the scene with constant adjustment (light-level, focus) while our brain is compositing it together into what feels like a single moment. However certain effects in games (i.e. "HDR" and Depth of Field) instead reduce the fidelity of the experience. These features limp alo…

The most egregious example is 3D. Only one thing is in focus, even though the scene is stereoscopic. It makes no sense visually.

Re: What is HDR, anyway?

#306

Post by JKCalhoun »

aidenn0 wrote: post #62

> A big problem is that it costs the TV, Film, and Photography industries billions of dollars (and a bajillion hours of work) to upgrade their infrastructure. For context, it took well over a decade for HDTV to reach critical mass. This is also true for consumers. I don't own a single 4k or HDR display. I probably won't own an HDR display until my TV dies, and I probably won't own a 4k display until I replace my work…

Only my laptop supports HDR. But that's one that I own anyway.

Re: What is HDR, anyway?

#307

Post by the_af »

qingcharles wrote: post #239
jiggawatts wrote: post #227

Earlier quoted context omitted.

The washed out grey thing was an error that became a style! Because HDR wasn’t natively supported on most displays and software, for a long time it was just “hacked in there” by squashing the larger dynamic range into a smaller one using a mathematical transform, usually a log function. When viewed without the inverse transform this looks horribly grey and unsaturated. Directors and editors would see this aesthetic d…

What you said, it's definitely become a style. But, also, a lot of these movies that look like ass on Joe Public's OOGLAMG $130 85" Black Friday TV in his brightly-lit living room actually look awesome if your entire setup is proper, real HDR devices and software, your screen has proper OLED or local dimming, is calibrated to within an inch of its life etc, and you view them in a dark home theater.

True! But I think that movies adapted for TV must be made for the average "good quality" screen, not the state of the art that almost nobody owns. At least they should look decent enough in a good quality (but not top-notch) setup.

Also, the YouTube video I'm thinking of singles out Wicked as seen in movie theaters. The image "as intended" looks washed out and without contrast.

Re: What is HDR, anyway?

#309

Post by bmurphy1976 »

robertlagrant wrote: post #305
Terr_ wrote: post #243

> Our eyes can see both just fine. This gets to a gaming rant of mine: Our natural vision can handle these things because our eyes scan sections of the scene with constant adjustment (light-level, focus) while our brain is compositing it together into what feels like a single moment. However certain effects in games (i.e. "HDR" and Depth of Field) instead reduce the fidelity of the experience. These features limp alo…

The most egregious example is 3D. Only one thing is in focus, even though the scene is stereoscopic. It makes no sense visually.

Hell yeah, this one of many issues I had with the first Avatar movie. The movie was so filled with cool things to look at but none of it was in focus. 10 minutes in I had had enough and was ready for a more traditional movie experience. Impressive yes, for 10 minutes, then exhausting.

Re: What is HDR, anyway?

#310

Post by robertlagrant »

bmurphy1976 wrote: post #309
robertlagrant wrote: post #305

Earlier quoted context omitted.

The most egregious example is 3D. Only one thing is in focus, even though the scene is stereoscopic. It makes no sense visually.

Hell yeah, this one of many issues I had with the first Avatar movie. The movie was so filled with cool things to look at but none of it was in focus. 10 minutes in I had had enough and was ready for a more traditional movie experience. Impressive yes, for 10 minutes, then exhausting.

Hah - Avatar was exactly what I was thinking of.
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