retrac 6 hours ago

I think some younger people might have never really seen a CRT. And they're positively rare now. I encountered a CRT TV in the hospital waiting room recently and was a bit startled to see one. So for those only passingly familiar, if you get the opportunity, spend a bit of time experimenting with it visually. Jiggle your eyes, look away suddenly, and then back, and try oblique angles. Maybe you'll see what they mean about "you just can't recreate that glow".

It's hard to describe but the image is completely ephemeral. All display technologies involve sleight-of-hand that exploits visual illusion and persistence of vision to some degree, but the CRT is maybe the most illusory of the major technologies. It's almost entirely due to persistence of vision. With colour TV and fast phosphors the majority of the light energy is released within a few milliseconds of the spot being hit by the beam. If you had eyes that worked at electronic speeds, you would see a single point drawing the raster pattern while varying in brightness.

A bit of TEMPEST trivia: The instantaneous luminosity of a CRT is all you need to reconstruct the image. Even if it's reflected off a wall or through a translucent curtain. You need high bandwidth, at least a few megahertz, but a photodiode is all that's necessary. The resulting signal even has the horizontal and vertical blanking periods right where they should be. Only minor processing (even by old school analog standards) is required to produce something that can be piped right into another CRT to recreate the image. I'd bet it could be done entirely in DSP these days.

  • everdrive 29 minutes ago

    Once we lost CRTs we began this insane race for all these duct tape solutions; all sorts of anti-aliasing, lighting, etc, and a resolution race that can only be described as pathological. Try modern games in low resolution with minimal effects on a CRT. You'll be surprised how much better they look, but also how much better they run; you don't need such a powerful rig when you turn your graphical effects down when using a CRT.

    • speeder 13 minutes ago

      I got very sad when my CRT monitor died. I was using a Radeon RX 380X, part of the reason is that it was one of the few cards to still have analog output.

      Then I went and played lots of recent games in lower resolution, but could turn on lots of expensive effects even with such underpowered card, because I could do low-res with anti-alias disabled and no scaling and have decent results.

      But true pleasure was playing for example Crypt of Necrodancer on that screen, the game felt so easy. I eventually stopped playing after that screen died, I could never nail the timing anymore on modern screens, the response time is not the same.

  • Waterluvian 5 hours ago

    Also don’t forget to rub your palm across the screen to collect the fuzzies that built up.

    • gadders 32 minutes ago

      Put a magnet by the screen as well.

    • black_knight 4 hours ago

      Ah, I can feel it from just reading your comment! That’s a feeling I haven’t felt in a while!

      • asdff 4 hours ago

        How about the smell?

        • markdown 3 hours ago

          You gotta give it a few slaps too, when the image isn't very clear.

          • Waterluvian 3 hours ago

            Pre-Gameboy, when I was a child, my grandfather had a television— the kind that was furniture. Sometimes it would eschew modern trappings like colour and v-sync, and I would employ my Classical Vaudevillian training to set it straight with a wallop.

  • auselen 2 hours ago

    I might miss visual aspects of CRTs, but I mean most of them had a coil sound or some kind of cracking sound. May be as TVs, screens for gaming consoles they were fun, but as monitors I don’t miss the heat burning my face.

emh68 8 hours ago

Sometimes I think about the bizarre path computer technology took.

For instance, long-term storage. It would stand to reason that we'd invent some kind of big electrical array, and that's the best we could hope for. But hard drive technology (which relies on crazy materials technology for the platter and magnets, crazy high-precision encoders, and crazy physics like floating a tiny spring over the air bubble created by the spinning platter) came in and blew all other technology away.

And, likewise, we had liquid crystal technology since the 70s, and probably could have invented it sooner, but no need, because Cathode Ray Tube technology appeared (a mini particle accelerator in your home! Plus the advanced materials science to bore the precision electron beam holes in the screen grid, the phosphor coating, the unusual deflection coil winding topology, and leaded glass to reduce x-ray expose for the viewers) and made all other forms of display unattractive by comparison.

It's amazing how far CRT technology got, given its disconnect from other technologies. The sophistication of the factories that created late-model "flat-screen" CRTs is truly impressive.

The switch to LCDs/LEDs was in a lot of ways a step back. Sure, we don't have huge 40lb boxes on our desks, but we lost the ultra-fast refresh rate enabled by the electron beam, not to mention the internal glow that made computers magical (maybe I'm just an old fuddy-duddy, like people in the 80s who swore that vinyl records "sounded better").

Someday, maybe given advances in robotics and automation, I hope to start a retro CRT manufacturing company. The problems, such as the unavailability of the entire supply chain (can't even buy an electron gun, it would have to be made from scratch) and environmental restrictions (lead glass probably makes the EPA perk up and notice).

  • mrandish 5 hours ago

    > like people in the 80s who swore that vinyl records "sounded better"

    I'm not one of those people who ever thought vinyl sounded better than a properly recorded and mastered digital version and I've always believed a high-bandwidth digital audio signal chain can recreate the "warmth" and other artifacts of tube compressors well beyond the threshold of human perception, however a broadcast-quality, high-definition CRT being fed a pristine hi-def analog RGB signal can still create some visuals which current flat screens can't. This is only controversial because most people have never seen that kind of CRT because they were incredibly rare.

    I got to see one of the broadcast production CRTs made to support NHK's analog high-definition video format in the 90s directly connected to HD broadcast studio cameras and the image quality was simply sensational. It was so much better than even the best consumer CRT TVs, that it was simply another thing entirely. Of course, it cost $40,000 and only a few dozen were ever made but it was only that expensive because these were prototypes made years before digital hi-def would be standardized and begin mass production.

    In fact, I think if it was A/B compared next to a current high-end consumer flat screen, a lot of people would say that CRT looks more pleasing and overall better. For natural imagery a CRT could render the full fidelity and sharpness of a 1080 image but without that over-crisp 'edginess' today's high-end flat screens get. And those "cathode rays" can render uniquely rich and deep colors vs diodes and crystals. Of course, for synthetic images like computer interfaces and high-dpi text, a flat screen can be better but for natural imagery, we lost something which hasn't yet been replaced. I'd love to see an ultra high-end CRT like that designed to display modern uncompressed 4K 12-bit HDR digital video.

    • speeder 8 minutes ago

      I had a music teacher that insisted analog recordings were different.

      One day she said there is a simple way to prove it. Certain stringed instruments have the string move on their own to the correct note if you put them near a source of similar sound. If you put these instruments in front of a speaker playing from an analog source and have the strings move, then play the exact same music but from a digital source on the same speaker, the strings stop moving, even if to most humans it sounds exactly the same.

      Sadly I never had the gear to test this, I am not a professional musician and was learning from that person as a hobby (she is a teacher for professional musicians).

    • ThrowawayTestr 3 hours ago

      Have you looked at any high end OLEDs lately?

  • Dylan16807 an hour ago

    > The switch to LCDs/LEDs was in a lot of ways a step back. Sure, we don't have huge 40lb boxes on our desks, but we lost the ultra-fast refresh rate enabled by the electron beam, not to mention the internal glow that made computers magical (maybe I'm just an old fuddy-duddy, like people in the 80s who swore that vinyl records "sounded better").

    CRTs don't have particularly good refresh rates. There is very little delay on the output scan, but 99% of the time the delays built into rendering make that irrelevant compared to fast screens using other technologies. And the time between scans doesn't go very low.

    I have no idea what you mean by internal glow.

trenchpilgrim 3 days ago

Some images to demonstrate how retro games look on CRT vs unfiltered on a modern display:

https://x.com/ruuupu1

https://old.reddit.com/r/crtgaming/comments/owdtpu/thats_why...

https://old.reddit.com/r/gaming/comments/anwgxf/here_is_an_e...

Modern emulators have post-processing filters to simulate the look, which is great. But it's not quite the same as the real thing.

  • dangson 3 days ago

    This helps validate my memories of SNES and PS1 games looking so much better when I was a kid than on an emulator today.

    • anthk 2 hours ago

      With 25% scanlines on PC CRT's they looked pretty close to TV's. On LCD's, forget it. Not even close, even with CRT filters.

    • StopDisinfo910 3 hours ago

      I played SNES and PS1 games on a CRT. I played them on LCD and OLED TVs. I can’t tell the difference.

      I mean I can tell that hdmi cables never introduce chromatic abberation something which was quite common on these old TVs when the SCART cables I used to use got old and I never had a LCD screen catch fire something which happened to me twice with aging CRT screens.

      I really don’t get the nostalgia or whatever it is called when some of the people who think it was better then weren’t born at the time.

  • majormajor 8 hours ago

    Blowing things up to that size is not representative.

    Back when I first started playing things on emulators we were using 12" to 20" CRTs or LCDs with much higher resolution than a TV, so whether CRT or LCD the pixels were chunkier.

    None of the nostalgia is how I remember it at all.

    The average CRT TV had crap color and poor brightness and going from that and the flicker of 1-to-1 size NTSC on a 20-something TV to an emulated "chunkier pixel" rendition on a progressize-scan 72+hz 1024x768-or-higher CRT or an LCD looked way better.

    Take the side by side pictures and zoom WAY out on a high-res screen or go stand several feet away from your monitor so that they're the size they were designed and expected to be seen at, and the vast majority of the perceived improvement from making the CRT subpixels visible goes away. And then put them into motion - especially vertical motion - and those lines in between, and losing half on each frame becomes more noticable and distracting.

    The 4th image there of the yellow monster is a good example. Even zooming to 50% on my high-res display makes the "bad" version suddenly look way sharper and detailed as the size starts to show how frequently "rounded dots with gaps between it" just looks like fuzziness instead of "better".

    And these comparisons tend to cherry-pick and not show examples of things that lose clarity as a result of the subpixels and scanlines instead of gain clarity.

    • thaeli 7 hours ago

      I'm the same way. The scanlined, subpixeled versions just look terrible to me.

  • cobbzilla 6 hours ago

    Absolutely. I love playing Atari 2600 games, and it seems sacrilegious to play on anything but an old-school CRT TV.

    Also, I’ve heard a CRT is required for NES light-gun games like Duck Hunt. Anyone know if this is true? I don’t have an NES, and if I did, I’d hook it up to my CRT, so I still wouldn’t know the answer :)

    • toast0 6 hours ago

      The NES light gun works with the properties the CRT provides... Roughly what happens is ... When you pull the trigger, the next frame is all black, and then one frame per target with a white square for the targer. If you're on target, the photodetector (photodiode? photoresistor?) will make a step change when the beam hits the white square, and the game code is looping to detect that. If the light comes late, it won't count; if it's not a big enough change, it won't count. If the screen was too bright during the black frame (or you were pointing at a light the whole time), it won't count.

      Most modern displays are going to show the square too late, some might not be bright enough.

      If you have an LED matrix and the right driving circuitry, you could probably replicate the timing, and that might work too, but I've not seen it done.

      More details and options for LCDs https://www.retrorgb.com/yes-you-can-use-lightguns-on-lcds-s...

    • vintermann 6 hours ago

      Yes, light guns/light pens actually relied on vertical/horizontal sync of the CRT screen to identify the position you pointed at, so they won't work on a modern screen.

  • nomel 3 days ago

    > But it's not quite the same as the real thing.

    To be fair, with modern "retina" HDR displays, it should be very very close.

    • hulitu 3 days ago

      > it should be very very close

      It should. It isn't. For some obscure reason, VGA colours look different on every modern LCD.

      • nomel 3 days ago

        Most modern displays are calibrated, to some reasonable level, and can easily accommodate the very limited gamut of an old CRT, especially anything supporting HDR10. I suspect this is more of "they need to be fudged so they're wrong" more than anything.

        • M95D 4 hours ago

          I don't think old CRT gramut is "very limited". Only plasma screens were as good.

          • Dylan16807 40 minutes ago

            Plasma has great contrast and a slightly wider gamut than a CRT. Neither one have particularly good gamuts unless you're comparing to sRGB. Many current screens can do much better.

      • nomel 3 days ago

        Most modern displays are calibrated, to some reasonable level, and can easily accommodate the very limited gamut of an old CRT. I suspect this is more of "they need to be corrected so they're wrong" more than anything.

EvanAnderson 3 days ago

I regret taking all my old tube monitors to Goodwill back in the mid-2000s. I saved a Commodore 1942, at least, but I sent all the rest away to die.

I appreciate the CRT modeling in emulators, but a hardware device that passes thru a display signal and provided sub-frame CRT artifacting and phosphor modeling (particularly if it supported 240P) would be bitchin'.

  • thaeli 8 hours ago

    FPGA based devices that can do this, and quite well, do exist, they're just expensive. The RetroTINK-4k Pro is the top of the line as of this writing but it's a $750 converter.

cesaref 3 hours ago

Back in the 80s, as the home computer revolution got going, computers were typically wired up to small, cheap, portable TVs as a display device. These TVs used shadow masks, and the computer video output was typically modulated to a TV signal, and the TV was 'tuned' to the computer. All of this added large amounts of blur and distortion even before the signal was displayed on the TV.

By the mid 80s, it was maybe more typical to buy a dedicated CRT monitor, and the computer connected via composite, or maybe even an RGB feed to the monitor, allowing higher resolution and much improved quality.

For the well healed, this route also led to the holy grail, a trinitron tube!

At each of these changes, the aesthetic of the display technology changed, but probably the best memories come from the original blurry stuff as the magical moment of actually getting something out of a home computer.

WalterBright 3 hours ago

Those aren't old TVs.

When I was a kid, I'd go to the TV repair shops and take old "unrepairable" vacuum tube TVs (no transistors!) off their hands. At home I tried to fix them. I had no idea how to fix them. But I had a lot of fun trying.

One of the fun things was to randomly swap around the vacuum tubes and see what would happen. Very entertaining! I used to have a box full of scavenged tubes. Sadly, I eventually tossed them out, never realizing how valuable they'd be in a few years.

My mom was convinced I was going to electrocute myself, and finally made me get rid of the sets.

  • voldacar 3 hours ago

    Most TV tubes aren't too valuable. Now if your TV was made by telefunken, that might be a different story

  • WalterBright 3 hours ago

    Oh, I did understand what resistors, capacitors (then called condensers), and inductors did, but how they worked together to make a TV work utterly baffled me. I couldn't understand how the vacuum tubes worked, either. I didn't know anyone who had any idea how electronics worked.

jader201 5 hours ago

I’ve got a 27” CRT right next to my 65” LG OLED C9 (which is starting to feel ancient, too).

It sits in a cabinet that currently holds an NES, SNES, N64, GameCube, and PS2.

It doesn’t get a ton of playtime, but when my now 21- and 18-year-old sons were young, I’d play on them quite a bit (they were already retro even then), and as they got older, they would too.

My oldest is particularly fond of the retro consoles and playing on the CRT, so he’ll hop on it when he gets the itch for something retro.

I feel like there’s a charm that will never fade, not only with retro consoles, but also playing them on a CRT.

I’ll never get rid of our CRT.

My oldest son wouldn’t let me, even if I wanted to.

natas 5 hours ago

you may enjoy this. My daughter is 10 years old, couple of months ago we went to an airbnb which had a crt tv and some vhs tapes. she looks at a vhs tape and asks, what is this? She had a look on her face like if she had just found a dinosaur egg.

mahirsaid 4 hours ago

one of the best for shooter games because of the high refresh rate. There is virtually no lag for quick scoping or fast playing. there is very little computing happening inside.

IG_Semmelweiss 8 hours ago

i have a 55" panasonic LCD. no apps or wifi.From 2003. Still works.

We have roku, which at some point in the last 4 years, it went rogue and auto updated itself for who knows what telemetry . We almost never use it now.

I plug my laptop via HDMI and the possibilities are still there.

  • M95D 4 hours ago

    > i have a 55" panasonic LCD. no apps or wifi.From 2003. Still works.

    Most probably a plasma, not LCD. LCDs from that time had extremely bad colors.

    If you're looking for an upgrade, try to find a Panasonic Viera VT/ST/GT50 or *60, but check for burn-in before you buy.

    > I plug my laptop via HDMI and the possibilities are still there.

    If the TV has HDMI CEC, then get yourself a RaspberryPi 4 (lowest memory model is enough) and LibreELEC. You'll thank me later.

  • neilv 8 hours ago

    My Sony Bravia XBR6 from 2008 is perfectly fine for my living room screen.

    (I even programmed an old Sony remote to kludge sending theequivalent of the PS5 controller logo button, for the PS5 that the TV is plugged into, for streaming and gaming. And found the trick to get the TV to go to standby when the PS5's HDMI signal disappears, which isn't a standard feature, though waking is.)

    I'll probably only upgrade if I relocate cross-country, and have Bay Area levels of money to spend on a much more expensive non-'smart' setup.

  • Aloha 5 hours ago

    At that age, are you sure its not plasma?

303uru 7 hours ago

I’ve hunted down a couple old school big screen TVs, the fresnel lenses are awesome toys, you can melt just about anything using them as solar collectors.

queenkjuul 9 hours ago

I'm not really a CRT fan tbh but my neighbor was throwing away a working 24" Sony Trinitron and you don't just let one of those hit the dumpster lol

Hooked up my spare PS2 and got a light gun for it. Wish i had a way to play duck hunt though.

  • RajT88 7 hours ago

    I have a 32" Sony something or other. One of the very last ones - HDMI port and does 1080i or 720p. What a find! 30 dollars, and about killed myself getting it in the house.

    The plan is to have all the light gun systems hooked up to it. Being able to get 1080i out of a PS2 while having the light gun work is a challenge I have not yet surmounted.

    • toast0 7 hours ago

      Unfortunately, you might have trouble with light gun games. Some of the HDMI CRTs do some video processing that adds video delay. :(

      If you're US based, you would probably use component video (YPbPr) to connect to your 1080i display; you can hook a ps2 light gun to the Y cable (usually green) and it should work if everything else is cool.

wrs 9 hours ago

Wow, do I feel old right now.