this post was submitted on 27 Oct 2025
504 points (92.3% liked)

Technology

76415 readers
3759 users here now

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related news or articles.
  3. Be excellent to each other!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
  9. Check for duplicates before posting, duplicates may be removed
  10. Accounts 7 days and younger will have their posts automatically removed.

Approved Bots


founded 2 years ago
MODERATORS
 

A new study published in Nature by University of Cambridge researchers just dropped a pixelated bomb on the entire Ultra-HD market, but as anyone with myopia can tell you, if you take your glasses off, even SD still looks pretty good :)

top 50 comments
sorted by: hot top controversial new old
[–] imetators@lemmy.dbzer0.com 9 points 3 hours ago (1 children)

I have 65" 4K TV that runs in tandem with Beelink S12 pro mini-pc. I ran mini in FHD mode to ease up on resources and usually just watch streams/online content on it which is 99% 1080p@60. Unless compression is bad, I don't feel much difference. In fact, my digitalized DVDs look good even in their native resolution.

For me 4K is a nice-to-have but not a necessity when consuming media. 1080p still looks crisp with enough bitrate.

I'd add that maybe this 4K-8K race is sort of like mp3@320kbps vs flac/wav. Both sound good when played on a decent system. But say, flac is nicer on a specific hardware that a typical consumer wouldn't buy. Almost none of us own studio-grade 7.1 sytems at home. JBL speaker is what we have and I doubt flac sounds noticeably better on it against mp3@192kbps.

[–] thatKamGuy@sh.itjust.works 2 points 3 hours ago

Interestingly enough, I was casually window browsing TVs and was surprised to find that LG killed off their OLED 8K TVs a couple years ago!

Until/if we get to a point where more people want/can fit 110in+ TVs into their living rooms - 8K will likely remain a niche for the wealthy to show off, more than anything.

[–] Pringles@sopuli.xyz 4 points 2 hours ago

I don't like large 4k displays because the resolution is so good it breaks the immersion when you watch a movie. You can see that they are on a set sometimes, or details of clothing in medieval movies that give away they were created with modern sewing equipment.

It's a bit of a stupid reason I guess, but that's why I don't want to go above 1080p for tv's.

[–] MilitantAtheist@lemmy.world 4 points 3 hours ago

I've been looking at screens for 50+ years, and I can confirm, my eyesight is worse now than 50 years ago.

[–] IronpigsWizard@lemmy.world 6 points 4 hours ago

After years of saying I think a good 1080p TV, playing a good quality media file, looks just as good on any 4k TV I have seen, I now feel justified........and ancient.

[–] melsaskca@lemmy.ca 1 points 2 hours ago

Black and white antennae TV's from the 1950's was clearer than a lot of TV's today, but they weighed 600 kilograms. Nowadays I buy cheap, small TV's and let my brain fill in the empty spaces like it's supposed to. /s

[–] gandalf_der_12te@discuss.tchncs.de 4 points 4 hours ago* (last edited 4 hours ago)

i can confirm 4K and up add nothing for me compared to 1080p and even 720p. As long as i can recognize the images, who cares. Higher resolution just means you see more sweat, pimples, and the like.

edit: wait correction. 4K does add something to my viewing experience which is a lot of lagging due to the GPU not being able to keep up.

[–] Blackmist@feddit.uk 5 points 4 hours ago

The main advantage in 4K TVs "looking better" are...

  1. HDR support. Especially Dolby Vision, gives noticeably better picture in bright scenes.

  2. Support for higher framerates. This is only really useful for gaming, at least until they broadcast sports at higher framerates.

  3. The higher resolution is mostly wasted on video content where for the most part the low shutter speed blurs any moving detail anyway. For gaming it does look better, even if you have to cheat with upscaling and DLSS.

  4. The motion smoothing. This is a controversial one, because it makes movies look like swirly home movies. But the types of videos used in the shop demos (splashing slo-mo paints, slow shots of jungles with lots of leaves, dripping honey, etc) does look nice with the motion interpolation switched on. They certainly don't show clips of the latest blockbuster movies like that, because it will become rapidly apparent just how jarring that looks.

The higher resolution is just one part of it, and it's not the most important one. You could have the other features on a lower resolution screen, but there's no real commercial reason to do that, because large 4K panels are already cheaper than the 1080p ones ever were. The only real reason to go higher than 4K would be for things where the picture wraps around you, and you're only supposed to be looking at a part of it. e.g. 180 degree VR videos and special screens like the Las Vegas Sphere.

[–] kossa@feddit.org 6 points 5 hours ago (1 children)

I just love how all the articles and everything about this study go "Do you need another TV or monitor?" instead of "here's a chart how to optimize your current setup, make it work without buying shit". 😅

[–] vacuumflower@lemmy.sdf.org 1 points 4 hours ago

Selling TVs and monitors is an established business with common interest, while optimizing people's setups isn't.

It's a bit like opposite to building a house, a cubic meter or two of cut wood doesn't cost very much, even combined with other necessary materials, but to get usable end result people still hire someone other than workers to do the physical labor parts.

There are those "computer help" people running around helping grannies clean Windows from viruses (I mean those who are not scammers), they probably need to incorporate. Except then such corporate entities will likely be sued without end by companies willing to sell new shit. Balance of power.

[–] art@lemmy.world 22 points 15 hours ago (2 children)

An overly compressed 4k stream will look far worse than a good quality 1080p. We keep upping the resolution without getting newer codecs and not adjusting the bitrate.

[–] Psythik@lemmy.world 6 points 11 hours ago* (last edited 11 hours ago)

This is true. That said, if can't tell the difference between 1080p and 4K from the pixels alone, then either your TV is too small, or you're sitting too far away. In which case there's no point in going with 4K.

At the right seating distance, there is a benefit to be had even by going with an 8K TV. However, very few people sit close enough/have a large enough screen to benefit from going any higher than 4K:


Source: https://www.rtings.com/tv/learn/what-is-the-resolution

[–] Squizzy@lemmy.world 2 points 14 hours ago (4 children)

I went looking for a quick explainer on this and that side of youtube goes so indepth I am more confused.

[–] Redex68@lemmy.world 1 points 3 hours ago

I'll add another explanation for bitrate that I find understandable: You can think of resolution as basically the max quality of a display, no matter the bitrate, you can't display more information/pixwls than the screen possess. Bitrate, on the other hand, represents how much information you are receiving from e.g. Netflix. If you didn't use any compression, in HDR each pixel would require 30 bits, or 3.75 bytes of data. A 4k screen has 8 million pixels. An HDR stream running at 60 fps would require about 1.7GB/s of download wihout any compression. Bitrate is basically the measure of that, how much we've managed to compress that data flow. There are many ways you can achieve this compression, and a lot of it relates to how individual codecs work, but put simply, one of the many methods effectively involves grouping pixels into larger blocks (e.g. 32x32 pixels) and saying they all have the same colour. As a result, at low bitrates you'll start to see blocking and other visual artifacts that significantly degrade the viewing experience.

As a side note, one cool thing that codecs do (not sure if literally all of them do it, but I think most by far), is that not each frame is encoded in its entirety. You have, I, P and B frames. I frames (also known as keyframes) are a full frame, they're fully defined and are basically like a picture. P frames don't define every pixel, instead they define the difference between their frame and the previous frame, e.g. that the pixel at x: 210 y: 925 changed from red to orange. B frames do the same, but they use both previous and future frames for reference. That's why you might sometimes notice that in a stream, even when the quality isn't changing, every couple of seconds the picture will become really clear, before gradually degrading in quality, and then suddenly jumping up in quality again.

[–] HereIAm@lemmy.world 1 points 5 hours ago

For an ELI5 explanation, this is what happens when you lower the bit rate: https://youtu.be/QEzhxP-pdos

No matter the resolution you have of the video, if the amount of information per frame is so low that it has to lump different coloured pixels together, it will look like crap.

[–] starelfsc2@sh.itjust.works 2 points 13 hours ago

On codecs and bitrate? It's basically codec = file type (.avi, .mp4) and bitrate is how much data is sent per second for the video. Videos only track what changed between frames, so a video of a still image can be 4k with a really low bitrate, but if things are moving it'll get really blurry with a low bitrate even in 4k.

[–] null_dot@lemmy.dbzer0.com 1 points 12 hours ago

The resolution (4k in this case) defines the number of pixels to be shown to the user. The bitrate defines how much data is provided in the file or stream. A codec is the method for converting data to pixels.

Suppose you've recorded something in 1080p (low resolution). You could convert it to 4k, but the codec has to make up the pixels that can't be computed from the data.

In summary, the TV in my living room might be more capable, but my streaming provider probably isn't sending enough data to really use it.

[–] 0ndead@infosec.pub 8 points 16 hours ago (1 children)

I think the real problem is that anything less than 4k looks like shit on a 4k tv

[–] __nobodynowhere@sh.itjust.works 1 points 2 hours ago

1080p can linearly scale to 4k

[–] michaelmrose@lemmy.world 11 points 18 hours ago (3 children)

The study doesn't actually claim that. The actual title is "Study Boldly Claims 4K And 8K TVs Aren't Much Better Than HD To Your Eyes, But Is It True?" As with all articles that ask a question the answer is either NO or its complicated.

It says that we can distinguish up to 94 pixels per degree or about 1080p on a 50" screen at 10 feet away.

This means that on a 27" monitor 18" away 1080p: 29 4K: 58 8K: 116

A 40" TV 8 feet away/50" TV 10 feet away

1080p: 93

A 70" TV 8 feet away

1080p: 54 4K: 109 8K: 218

A 90" TV 10 feet away

1080p: 53 4K: 106 8K: 212

Conclusion: 1080p is good for small TVs relatively far away. 4K makes sense for reasonably large or close TV Up to 8K makes sense for monitors.

https://qasimk.io/screen-ppd/

load more comments (3 replies)
[–] ManosTheHandsOfFate@lemmy.world 10 points 18 hours ago (1 children)

This finding is becoming less important by the year. It's been quite a while since you could easily buy an HD TV - they're all 4K, even the small ones.

[–] NigelFrobisher@aussie.zone 2 points 13 hours ago

And then all your old media looks like shit due to upscaling. Progress!

[–] OR3X@lemmy.world 25 points 23 hours ago (5 children)

ITT: people defending their 4K/8K display purchases as if this study was a personal attack on their financial decision making.

load more comments (5 replies)
[–] ShinkanTrain@lemmy.ml 8 points 19 hours ago* (last edited 19 hours ago)

Here’s the gut-punch for the typical living room, however. If you’re sitting the average 2.5 meters away from a 44-inch set, a simple Quad HD (QHD) display already packs more detail than your eye can possibly distinguish.

That seems in line with common knowledge? Say you want to keep your viewing angle at ~40º for a home cinema, at 2.5m of distance, that means your TV needs to have an horizontal length of ~180cm, which corresponds to ~75" diagonal, give or take a few inches depending on the aspect ratio.

For a more conservative 30° viewing angle, at the same distance, you'd need a 55" TV. So, 4K is perceivable at that distance regardless, and 8K is a waste of everyone's time and money.

[–] pixeltree@lemmy.blahaj.zone 11 points 20 hours ago (13 children)

Personal anecdote, moving from 1080p to 2k for my computer monitor is very noticeable for games

[–] nek0d3r@lemmy.dbzer0.com 7 points 20 hours ago

Even 4K is noticeable for monitors (but probably not much beyond that), but this is referring to TVs that you're watching from across the couch.

[–] Jarix@lemmy.world 2 points 15 hours ago

Going down from 24" 2048x1152 to 27" 1920x1080 was an extremely noticeably change. Good god I loved that monitor things looked so crisp on it.

load more comments (11 replies)
[–] michaelmrose@lemmy.world 7 points 19 hours ago (20 children)

Please note at 18-24" with a 27" screen 4K does not max out what the eye can see according to this very study. EG all the assholes who told you that 4K monitors are a waste are confirmed blind assholes.

load more comments (20 replies)
[–] the_riviera_kid@lemmy.world 25 points 1 day ago (15 children)

Bullshit, actual factual 8k and 4k look miles better than 1080. It's the screen size that makes a difference. On a 15inch screen you might not see much difference but on a 75 inch screen the difference between 1080 and 4k is immediately noticeable. A much larger screen would have the same results with 8k.

load more comments (15 replies)
[–] Surp@lemmy.world 30 points 1 day ago (10 children)

8k no. 4k with a 4k Blu-ray player on actual non upscaled 4k movies is fucking amazing.

load more comments (10 replies)
load more comments
view more: next ›