HDR or High Dynamic Range as Fast As Possible
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- Опубліковано 2 чер 2024
- HDR or High Dynamic Range is a (mostly) photography technique that involves exposing an image multiple times to dramatically increase the performance of the camera's sensor.
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Big thanks to Lifehacker for their excellent article that we used as one of our references while creating this video, and a huge thanks to them for sharing our video in their article as well!
t.co/sgkN56dtQb - Наука та технологія
As always, whenever Linus says "speaking of" that means that you can stop the video.
Having a subscription for youtube Premium im starting to ignore these kind of video's... in paying not to get commercials now you get them in the videos like this. Linus has some nice videos but I'm starting to get fed up by his sponsors.
@@sygys bruh you just responded to a 5 year old comment.
@@pegasus_2137 ikr
Insomniac Millennial hello
I can't believe 5 years went by since I left this comment.
I think you can do some great things with HDR, but I think a lot of people tend to overdo HDR and I just don't like the look of extremely obvious HDR. I think pictures look the most refined when you apply HDR in a subtle manner.
I think that goes for many more artistic mediums than pictures. Almost anything is better when done subtly, rather than there in your face, so yeah, I agree :p
pure HDR is suspiciously close to SDR
@@freevbucks8019 - I notice a difference with HDR. It's like SDR but with a non destructive contrast range. Colors pop more and SDR black fogginess is pushed back too. It kinda feels like the bright version of OLED for VA panels.
Did he just say 'automagically'? Awesome
😂😂
Considering that it's a real word, I'd say yes, he did say it.
@@MacDaddyDev hello im from the future
Walid Fakhfakh 😂
@@walidfakhfakh3660 lol
Would love to see a video about HDR in video games. this does a good job of explaining the concept in still photography, but what about digitally rendered 3d environments that you move about in? how practical is HDR in a video game?
Thanks for the free HDR Wallpaper linus at 4:49. I took a printscreen and removed the logo from techquickie. I appreciate our work.
The video isn't uploaded in HDR.
@BonkedByAScout I'm not sure you understand how this works...
LOL He deffinetelly doesnt understand how HDR works :D
I'm quite sure how it works. This video isn't uploaded in HDR. HDR shows up as a separate play option for the videos, it says something like '2160P HDR'. I've watched other HDR videos on YT. Do you know how HDR works?
BonkedByAScout you clearly have no idea what you're talking about and how this works.
Any video can show HDR.
HDR in this context, means that the shadows were brightened and the highlights were darkened. This is all. The procedure is called tone mapping.
Just a little correction: dynamic range is measured in stops not f-stops. F-stops exclusively refer to the aperture of the lens. Stops however can be used for exposure (i.e. two stops overexposed) or dynamic range with there being say 15 stops of dynamic range between the darkest and brightest part of the image.
250 DOLLARS A MONTH?! Ehhhh, Google is still fine
Samantha03 NASA couldn't invent a telescope that could see how far my joke went over your head
MarioDragon Actually, due to the time it takes light to travel long distances, we could build a telescope so far away that when looking at his head, we would see the joke just as it was going over his head.
Samantha03 don't worry, you already gave TWO fucks
***** No we couldn't unless you can travel faster than light which is impossible. And you couldnt see it from that far with NASA's telescope anyway.
FINDarkside If we were already far back enough, we could.
2:02 "audomagically"
Yes, Mistakes happen.
Sometimes motion can make the image look really nice. I did some HDR in 6th form and found that motion can be really nice if you are patient enough to take the same photos 100's of times to find the one you were looking for. HDR works really well in macro blakc and white which was my final photo.
+Techquickie Crazy how far this has come, especially with the current state of 4K on various devices including Smartphones.
For the next as fast as possible, can you please explain what single/double precision is and floating point ops? I have a vague idea but I would really like to know what these are further.
I don't know why these videos are too damn good. I finished the main segment and Linus started talking about Shutterstock when my girlfriend called - I paused the video, had a chat, and once I was on the phone I resumed the video to listen to the rest of the advert. I didn't have to... I mean, I'd already learned what I needed to. But I did.
... I willingly listened to an advert. Man, this channel's crack.
This one is quite informative particularly. It makes a lot of concepts regarding HDR clearer that previous explanations didn't for me.
LTT has come so far! I'm so happy to have found this old but still (mostly) relevant video. Kudos guys, crushing it for more than a decade isn't easy.
Well, I do use HDR sometimes in order to get more contrast and/or color out of my pictures. But I do it on my computer where I can better manage f-stops. Also, if you don't want blurry images, usually caused by moving objects, it's better to take only one shot (also good for the storage, if you don't have much) and multiply it by 3 or 4 or as many different exposures you want, on your computer, then post process them to get the desired result. This way, since you're basically working with a single shot, and assuming the initial shot was good one, you've got no chance to get blurry pictures caused by overlapping different stages of moving objects.
"Hit that dislike button at least twice"
XDDDD
I hit it only once, sorry, twice just takes you back to nothing
Andres Hernandez no fucking shit
atleast twice ,right. i will press it 3 times then
XDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
If you hit it fast enought it will be counted as Dislike lol
HDR is basically the visual equivalent of the way radio stations compress their audio dynamic range so that everything plays at the same volume. Both techniques have practical benefits, but can ruin the fidelity of the source material when overused.
Well put... its "garbage out" without the garbage in...
no?
THAT WAS A GOOD ADVERTISING SEGWAY!
One of few good ones lols.
I loved the "how to basic" one for the shave products
Linus needs to do a "how to do a good sponsored segway as fast as possible
*****
Actually, Follows * according to Translate. :D
***** What if he's just segueing into a Segway ad?
LOL I thought HDR meant High Definition Resolution xD, well thanks for the lesson Linus =D
I was actually expecting an explanation of HDR as in TV's or gaming like 4K HDR , but also made me realize that yes my iPhone when taking pictures says an HDR option to on and off toggle !
HDR is extremely useful for taking pics of my DIY projects!
Oh and, finally a useful sponsor!
In vfx, HDR means something different. What Linus describes in this video is the "consumer" version of HDR which is often referred to as "tone-mapping" (ie crushing everything into low-dynamic range so that you can see the details in both underexposed and overexposed areas).
In the industry HDR images we use are NOT tone-mapped and stored as "linear" or "scene-referred." Meaning the pixel values recorded correlate directly to the amount of light captured (which isn't the case with everyday photos which operate in perceptual space). These HDR images may appear funny when you look at them without any conversion, but they're super useful for all kinds of applications such as compositing and staging CG lights.
I've been using HDR for photos. It's not so much the expanded dynamic range that gets me; in fact, it's the tone map features available in HDR programs. You can create very stylized accents, and create your own style. I look at vivid, grungy, and/or overly detailed images as a great basis for art, while I think that for photography is quite overwhelming.
Nice explanation for starter photographers, and i recomend using HDR only for cold colour landscapes or just for having crazy unreal imager for your wallpaper. :3
May be 4+ years old but I got a new phone with HDR and at 3.27am I wanted to know what it actually was. Thanks for making this really easy to understand!.
Great video Linus, this is exactly what I wanted to know. What is HDR+ though?
watched you a few times on purchase advice. glad i found you! subbed :D
Linus literally has a video for every single topic
Great explanation of HDR. It sums up what the average smartphone user needs to know in order to make informed decisions about when to turn the feature on.
a segway that actually connects well. Great video too! :D
I think the un-natural look that HDR rings is so beautiful, I mean, It's just so good!
The best explanation for HDR I have ever come to see
I would love to see 8bit dithering HDR vs 10 bit native HDR comparison
I personally love HDR from a personal art standpoint, however I understand the arguments against it. I love that surrealism you can achieve, but I am also the kind of photographer who loves tilt-shift.
Thanks…this helped me understand the HDR on my new iPhone. I loved how you presented this, too!
Excellent presentation, Techquickie: Informative, entertaining and speedy. ¡Thanks!
Man this guy's great, he should start his own company
I've always liked looking through photo books of surrealistic HDR photos. Sometimes reducing the barrier between reality and imagination is a healthy exercise.
HDR is great on a phone like the Galaxy S5 since you can preview it live instead of after taking the picture. It makes it easier to take pictures of people outside with bright sunlight without having to worry as much that their face will be too dark.
But it also explains why a bunch of my pictures of moving objects came out so horrible and weird.
Daniel Copeland Yup, that's why it can be turned off. That's the compromise, but usually HDR is for pictures of still objects. If you plan on fast moving stuff, you better also plan you lighting and camera location.
What happened to your Pebble?!?! I also have a red Pebble, and a lot of people say it's silly, and literally just 2 hours ago I used the argument "Linus has one and he's awesome, therefore I'm also awesome."
I switch to whatever I'm reviewing at any given time.
Love your videos man. Thanks for this!
So glad i found this video I have a motorola moto e5 plus and the HDR was snapping two photos instead of one while using front camera with led flash. I thought something was wrong with my phone but I am thankful I found this video... Anyone else ever have this same issue as me and thought your phone was broke?
i like to use HDR not to make hyper-realistic photos but to use its affects on the light and other settings to get photos to look a different way usually like two settings disagreeing and changing the photo dramatically.
You guys should do a Fast As Possible on Hardware Acceleration. I always see that on browser settings but I have no clue on what it actually means.
Whats the Goal with TVs?
do people want to recreate real life?
or make TV look better than real life
or you see blacks greater than oled lol
Thanks for the video,can't believe that after all these years i stiil didn't looked up what HDR was.
alot of us use HDR via a later on added effect for creating a somewhat color correction for images, but that is more to the "art" part of HDR
I just learned how to do hdr.. I am hooked! Thanks for your video!
You just won a subscriber, what a nice way to explain all this weird things
Thank you! A helpful run down on a new (to me) tool.
Living in 2022 where HDR monitor is common, even more common in smartphones, I thought Linus was going to talk about 10-bit HDR video, as supposed to 8-biy SDR. Apparently it's HDR in general which was based on photography uses.
I often use HDR technique lately with my mirrorless camera even though sometimes it's not necessary, just to learn the hoops and loops of it, and of course seeing how it would look like more true to life. I can fairly make them look real but what I found is I rarely going hard on the shadows of the bracketed image (the blended 3 or 5 differently exposed images) because the contrasting edges on the shadows would look weird and in the end "surreal". That's what I don't like with photos taken with iPhones these days, yes they look "nice" because the HDR is on by default, but the postprocessing got hard on the shadows.
absolutely love your videos. very imformative
I miss Linus without a beard.
And his voice sounds higher-pitched in this video, than in his recent videos, like he went through puberty later in life.
this is a great video. thank you. you make some solid videos!
Thanks Linus, always wondered what it actually does
HAHAHA hit the dislike button twice, I SEE WHAT YOU DID THERE
how has no other youtuber said this!?
haha i will like your comment button thrice...
Bishu15 Death I liked your comment Frice...(five times)
It actually disliked when I did that
i dislike then like and dislike again.
FINALLY . . . I wondered what those (HDR) options were for Oblivion and Skyrim.
I tried taking a photo in a room with bright LED lighting using HDR and it came out really washed out. That room does not have any bright or flourescent colors either. I just was not aware that HDR would have an opposite effect in that lighting. I know HDR can produce stunning images.
I was playing a game with a lot of vibrant colors and shadows, but was feeling like my eyes couldn’t focus properly and was having trouble playing and seeing things. Turned hdr off and omg, that is so much better, that lead me here to know wth I was turming off and it all makes sense now
So basically this is what we needed in the moon landing to be able to see the stars in the back ground ;D
It would probably help if they didn't film it on a set too lol
Thanks Bro, that was a pretty clear explanation of HDR. :P
watching this videos on an HDR monitor today shows how FUCKED the old color management was during 2014 techquickie editing.
Thanks, this was a really informative video.
Hi, will the HDR highlights of an HDR content work if that content is sourced from the USB port as opposed to HDMI port?
Gone are the days of muddy mid-tones and eye-watering halos, HDR has undergone something of a Renaissance. The results are so natural they're not even noticeable
Thanks a lot for the info!
Really appreciate it!
I needed to know all of this. Explains a lot of blurry images I've taken.
Can we get an updated version of this in-relation to HDR *screens*?
HDR can look really nice, if done well and i guess it has the potential to get the MOST realistic shots as it works roughly the same way our eyes do. But its got a long way to go before we see images that good. Of course they probably wont look as artsy as regular photos do but at least you have a choice, right?
HDR looks to me like a panel with brightness and contrast cranked up a bit. Like we suddenly just discovered brighter colors on monitors! Monitors were just in a stagnent market and they needed something to market. I can't believe how much all of the tech UA-camrs bought into it.
I came here looking for what HDR might do on a monitor, TV, or my playstation since it is a setting, but I guess this works too
very well explained, thank mate!
But what I dont get is that when you have low f-stops you get those very white backgrounds when there is a lot of light. Doesn't having less stops mean that you have a lower limit of the light level difference between the dark and light spots, thus the contrast between those 2 would have to be lower, so how does it make sense that these spots are so crazy light, instead of capped more neutral?
This isn't actual HDR, this is so-called "tone mapping" to squish a HDR image into a standard range while still preserving detail. No wonder it looks surreal.
Cameras capture light and write the values into a file, and monitors then read the file and try to reproduce the light as precisely as possible. It would make sense to use an unbounded number for this purpose (there is an absolute black, but not an absolute white in real life), but most cameras clamp it into an interval of [0,1] and encode it in either 8 or 10 bits of precision. I don't know exactly why they do this, but my guess is that it has something to do with the sensors not being able to provide much resolution when they're exposed so much. The point is, they give you information about the light intensity in a certain range, and just return 0 or 1 when it's beyond that range.
The "HDR" Linus is talking about is just artificially shifting the extremes down to the midtones, which totally ruins the realism. It's not high dynamic range, just detail preservation. You could just squish the HDR range linearly, but that would make it really dim, and despite our eyes' impressive adapatation abilities, the detail just won't be visible due to that (unless you have an ideal monitor set to a massive brightness).
You *can* make a true HDR image by fusing exposures, and it's actually the standard way of doing it. You just don't "borrow the dark details from the bright image and the bright details from the dark image", you use a *completely different image format* to encode it. Radiance RGBE and OpenEXR are common ones. They encode the true light intensity without any ugly shifting, they take the bright details from the dark image and *shift it into the brighter range*, not just overlay it over the midtones like an idiot. However, these images can't be directly displayed on most monitors.
An ideal monitor should take in an array of RGB brightnesses and output anything from 0 to infinity. Obviously, we can't have infinite brightness in real life, this is HDR, not IDR.
LCD monitors have a problem with the blacks, becuase they use light-blocking pixels in front of a backlight, which can't block all light completely. They generally look ok in bright scenes because the sheer contrast makes it look black to our eyes, but you can definitely notice when watching a space scene or something. A few solutions to this could be local backlight dimming and ultra-bright OLED displays where pixels emit their own light (both hard to make). The monitor also needs a massive bit-depth to sample the huge range adequately.
So in order to display it on a regular LCD potato monitor, you either simulate what a camera does and pick a range and clamp it to that (which kinda defeats the purpose of using HDR), or use a tone mapping operator (TRO) to squish it down and retain some of the detail. The challenge here is making a TRO that doesn't look like crap.
Anyway, enough rambling, I just wanted to say that there's more to HDR than merging 3 images like that.
this is probably a silly question, but is HDR available on analog cameras? In other words, in the analog age of cameras, where photographers able to essentially do what HDR does today?
Yes... sort of. You'd have do some trickery during development with multiple exposures, and possibly some masking or other techniques.
I'm a hobbyist photographer, so take what I say as such; I'm no pro.
But in general I like HDR technology. There are times when it's handy, and times when it's not. I think learning to use it in appropriate situations is perfectly fine. And while it may make some images look surreal, I don't think that's necessarily always a terrible thing.
I think Linus hit all the points about how HDR works, problems with using it, and situations it is better for.
So well explained, thank you so much
I've seen HDR as an option in a game's Video settings...
the other option being Bloom effect....
what is difference between these two?
Thank you for this video. I have HDR on my iPhone 5s. But I never got round to googling it!!
hey Techquickie!!..........quick question, if i want to take a night shot of, uhm....maybe an airplane on the ramp at night, or even a video of that aircraft..........what settings on my andriod camera phone should i use??
I came across this while Googling what HDR meant after noticed it for the first time on an iPad that's in my home.
I wasn't to sure what it did when I took a picture of my Shih Tzu with it (who is black, and on a black couch).
Normally the pictures don't seem as interesting as this one was, but I wasn't to sure what it exactly did...but after watching this video of what it is. I have a better understanding of it now.
I'm thinking of taking it out and seeing what I could get with the iPad (its the only product I currently own that has this option, lol).
I haven't taken pictures around my neighborhood in quite awhile, and the neighborhood has changed a bit since the last time I did that...could checkout some new and old places get some pictures for memories.
But I am liking the idea of how it can make an "unrealistic" look to an image, I've seen how some images looked and I've thought they were pretty cool that I'm assuming were done like this.
Maybe I could get some cool ones I could use for coverart or things I put up on my website.
+Chaz PsyKoticz All cameras can do HDR.
hi can you please do a video about projector lumens for big screen and for 150" screen and more what is best lument, clo, lumens vs ansi lumens
thx.
Can HDR compete with a CRT?
I currently have at my house a CRT for my PC and a Dell IPS at my apartment, even thou it's supposed to be a good IPS it can not compete with my CRT, it doesn't even come close, both are 2k(althou one is 4:3 and the other 16:9), and TN Panels are not even in the neighbourhood.
The thing is, every weekend I get blasted with the CRT goodness, super high contrast, amazing colours and brightness levels, coming back to the IPS panel is always quite frustrating...with glowing black and ever so slightly backlight bleeding.
Hey ,can someone pleae give the link to the image of the mountain ?
Thanks :)
What are the differences in HDR. I am looking for a 4K tv and one said HDR10 and others say just HDR, then one which I assume is better. It said Active HDR. I would assume the active one adapts more then standard? Any info be great and if you have a video on this. I would like to check it out.
I need more of these
1:03 always smart to end explaining current technology with “today”
Are there softwares that enables this HDR to edit the already output picture? Because cameras specially the DSLR's and expensive ones has this feature to adjust the focused image when it is overly bright...
Does HDR have any sort of performance impact in terms of gaming? HDR content leads to larger file size, leading me to imagine it would.
Thank you to the authors of the report on human development. So put your goals in life, one photo.
I was kinda annoyed when it said 'as fast as possible', but by the end of the 4 minutes (I'm excluding the end spruik) I was happy. You really did explain the whole of it well, including the nuances of it - things that might usually left out (to the loss of the viewer). My trust in committing attention to you talking has increased dramatically. Thank you for isolating the advert to the end of the video, because I don't want to watch it :) Cheers.
thank you Linus good info as ALWAYS
Hrm. I never knew what the HDR option meant on my iPhone. This is helpful.
Good info! Thanks Linus! :)
So for gamers, its better to choose displays with higher dynamic contrast ratio than going for a HDR ready display?
You can somewhat cheat the hdr system but results may vary.. what I mean is the lazy method. if you don’t want to carry around tripod all the time. What I do is in Lightroom you can choose a picture that you want to apply hdr to and create multiple virtual copies of that picture and under exposing it by going down two f-stops and over exposing by going up two f-stops on the other virtual copy. After that you can take those pictures to an hdr software of your liking.. works pretty good for the most part but like I said results vary and is a pseudo method.
Nice video, but not all HDR is HDR. HDR as explained is capturing all that visual info and "downgrading" it into a 24bit image. But all that info can be also saved in specific image formats like *.hdr, *.exr, etc. in a 32, or 48bit mode. In this case it is referred to as HDRI.
While these images don't look too sexy when opened, they contain all that fun info that can be reused for changing your exposure basically at will in post production, or have realistic lightning in a 3D software environment.
Questions what extended Dynamic range or extended high dynamic range or active hdr or active hdr with hdr what are these things how they differ from one another.
No royalties? Thats pretty sweet as long as you can use a decent amount of images in that one month subscription.
Can you make a diference between the amd processors? the aX (a4, a8, a10...) and the amd fx? i want a gaming computer and i want to know all the information possible. Thanks