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Found a few CRTs nearby but can't find much about them...

post #1 of 10
Thread Starter 
There is a LG Electronics LG Flatron 775FT, Viewsonic A91f+, Viewsonic P95f+, and Samsung SyncMaster 950p near me. What do you guys think of these monitors?

Also, any tips on what I should do while testing them? I'm thinking of bringing my laptop and seeing if they work. However, is there any other things I could try to see if the cathodes are going to die any time soon?

I might just pick up all of them... xD The 950p and LG ones are looking really nice.

Cheers on input!


Another question...the radition given off of CRTs are harmful enough to cause any damage? What distance should I be from the crt? Are the rays ionizing?
Edited by Domino - 10/30/11 at 11:46am
post #2 of 10
Well, I wouldn't say any of them are worth anything in particular. In my honest opinion, only the highest end 21/22/24" models are worth using these days. Anything less is meh. But those high end models are enough to be worth quite a bit these days. At some aspects of (even static) IQ, high end CRT is still better. Mainly black depth, lack of banding, not having a visible grid of pixels, higher pixel density, etc, you know that.
But these benefits are not worth it from LCD unless you got the absolute highest end models, that are actually usably good. (My opinion of course)

The biggest sign of a dying tube AFAIK is the slow warm up time, more than the usual 5-20 seconds, also if there's any abnormal tinting during the warm up. Most issues are electronics issues, but with such mediocre CRTs, fixing it is not worth it.

The CRT won't be harmful in any way whatsoever aside from eye strain if you're running below 85hz.


PS: If you're getting those, I'd only recommend the latter two if you're getting anything. And remember to check if your laptop supports analog output. If it doesn't, you can't check if the thing works.
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by De-Zant View Post
Well, I wouldn't say any of them are worth anything in particular. In my honest opinion, only the highest end 21/22/24" models are worth using these days. Anything less is meh.
Is that only for your personal preference or that the smaller CRT monitors weren't engineered for good image quality?

Quote:
But these benefits are not worth it from LCD unless you got the absolute highest end models, that are actually usably good.
That is compared to 10-12 bit IPS colour monitors correct? Image quality (colour gamut accuracy and image clarity), low resolution gaming, and refresh rate is what I'm looking for. I can get the 950P and LG for 35 bucks for the lot. I don't think there would be monitors in the 35 dollar range that would surpass these?

Quote:
The biggest sign of a dying tube AFAIK is the slow warm up time, more than the usual 5-20 seconds, also if there's any abnormal tinting during the warm up. Most issues are electronics issues, but with such mediocre CRTs, fixing it is not worth it.

The CRT won't be harmful in any way whatsoever aside from eye strain if you're running below 85hz.


PS: If you're getting those, I'd only recommend the latter two if you're getting anything. And remember to check if your laptop supports analog output. If it doesn't, you can't check if the thing works.
Thanks. I'm hearing some good things about the 950. I'll get the LG as a spare.
Edited by Domino - 10/30/11 at 3:36pm
post #4 of 10
Quote:
Originally Posted by Domino View Post
Is that only for your personal preference or that the smaller CRT monitors weren't engineered for good image quality?
The smaller models have much more limiting resolution / refresh rate combinations. The higher end models can achieve 2048x1536 @ 85hz easily, and still have almost LCD clear text, while the models you linked seem to hover around the 1600x1200 / 1280x1024 area for the desktop, and have much lower refresh rates per the same resolutions. Even that defeats some of the benefits of CRTs, high refresh rates and high resolutions on small screens.

Quote:
Originally Posted by Domino View Post
That is compared to IPS monitors correct? Image quality (colour gamut accuracy and image clarity), low resolution gaming, and refresh rate is what I'm looking for.
Well, really since they have nice IQ and high refresh rates and no ghosting, that would be in comparison to IPS and 120hz monitors, as well as high end VA panels. (Depends on what you look for in a monitor)

Well of course they'd do quite decently for low resolution gaming, if that's what you're looking for.

But yes, image quality compared to both IPS and TN panels, CRTs have much darker blacks than the vast majority of LCD monitors. They don't have ghosting unless it's signal based. They allow resolution flexibility. Numerous other benefits... They are sRGB. Color accuracy depends on the individual. Some might be too worn out tube / electronics wise to be of any use. While some might be just out of calibration.

Image clarity? Well. If you mean in games, I don't see why you'd want low resolution. Technically, seeing how games scale most of the time, more resolution = more clarity, as far as your eye can see the increase.
And CRT monitors aren't exactly the clearest things out there. Image clarity wise, the sharpest models, like my GDM-F520s, can just barely match a 1920x1200 panel in games while running 2048x1536, and that's only if they are focused properly. The aperture grille can't resolve the resolution in full detail, is why this happens.¨
(Anyway, that's your concern, never mind)

And even for refresh rates, the higher end models are a wiser choice because they allow higher max refresh rates.



... however if they are cheap and you really want a CRT for low resolution gaming, why not? I'm assuming you mean something like 1024x768, at which point, it should not be considerably worse than a higher end model, although it'd still have a lower refresh rate, though it should still be adequate.
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post #5 of 10
Thread Starter 
Quote:
Originally Posted by De-Zant View Post
The smaller models have much more limiting resolution / refresh rate combinations. The higher end models can achieve 2048x1536 @ 85hz easily, and still have almost LCD clear text, while the models you linked seem to hover around the 1600x1200 / 1280x1024 area for the desktop, and have much lower refresh rates per the same resolutions. Even that defeats some of the benefits of CRTs, high refresh rates and high resolutions on small screens.
So your preference was just limited to resolution and refresh rates. The 950p can handle 1920x1440 at 62hz and 1024x768 at 160hz. I'll be gaming at the latter, maybe less. I find lower resolutions are more controllable on competitive FPS spray and easier to respond on competitive RTS games.

Anyways, you finally answered my question later one. However, does anyone have a sRGB colour gamut to provide evidence for such?

Quote:
And even for refresh rates, the higher end models are a wiser choice because they allow higher max refresh rates.
It isn't wise when you need to spend 600-1'200 bucks to game at a framerate that would match the refresh rate at that resolution at the max possible settings.
Edited by Domino - 10/30/11 at 11:42pm
post #6 of 10
Low resolution gaming is an unusual requirement (although I know a lot of oldschool 1.6 players who still play in 800x600).

But yeah, CRTs can scan low resolutions without affecting IQ as much, and at lower resolutions the gun doesn't have as much work to do, so can scan faster.

You keep mentioning color gamut and accuracy (which are completely different as you may know...gamut is the monitors ability to represent colors in a particular color space, whereas color accuracy can have a few meanings...) I'll give the same advice that I give everyone who asks about gamuts, wide gamuts and rendering accuracy - without the necessary calibration hardware it should not be something that concerns you too much

Calibrated sRGB is absolutely fine, though, but as De-Zant said, CRT phospors degrade over time (especially green) so the IQ can be lower than expected.

There are other issues with CRTs such as geometric distortion (unless any of those you mentioned were flat screen...) but I guess that's down to whether the use finds it annoying.

As for an sRGB gamut, see below...but I don't know if that's what you wanted?

The triangle inside the cie chart represents the colours in sRGB space, with red, blue and green as the triangle's vertices, and D65 (6000K) as 'white'.




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post #7 of 10
Thread Starter 
Quote:
Originally Posted by fluxlite View Post
Low resolution gaming is an unusual requirement (although I know a lot of oldschool 1.6 players who still play in 800x600).
The two main reasons why I want a low resolution is that I can guarantee a high framerate that would make gameplay much more smooth. The second is that I find it is easier to react and or control your accuracy with a lower resolution; objects appear larger and you have less dots to move your mouse over to reach the target (RTS). I also don't need to turn my head as much in order to see the entire screen.

But yeah, CRTs can scan low resolutions without affecting IQ as much, and at lower resolutions the gun doesn't have as much work to do, so can scan faster.

Quote:
As for an sRGB gamut, see below...but I don't know if that's what you wanted?
Most LCDs, especially 120hz panels, don't produce all possible colours that the human eye can detect. I was under the impression that CRTs can produce more colours then a standard LCD. Plus, the monitors that do support 10-bit plus colours don't have high refresh rates.

I was looking for an image that shows what colours were being produced by a CRT itself.
post #8 of 10
Thread Starter 
Is it true? Do these CRTs produce more of the colour gamut then a TN panel?
post #9 of 10
Quote:
Originally Posted by Domino View Post
Is it true? Do these CRTs produce more of the colour gamut then a TN panel?
In theory, they should stay within the same color space.

I think you are confusing gamut and the amount of colors. CRTs are technically sRGB gamut, but you can shove as many or down to 4 colors in sRGB color space, and it could still technically be sRGB. Alternatively, you could shove 10 trillion and it'd still be sRGB color space.

Or rather, shades of colors. Not sure how to word that properly, but you get the point.
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post #10 of 10
Thread Starter 
Quote:
Originally Posted by De-Zant View Post
In theory, they should stay within the same color space.

I think you are confusing gamut and the amount of colors. CRTs are technically sRGB gamut, but you can shove as many or down to 4 colors in sRGB color space, and it could still technically be sRGB. Alternatively, you could shove 10 trillion and it'd still be sRGB color space.

Or rather, shades of colors. Not sure how to word that properly, but you get the point.
I'm trying to say, the NTSC but I've just read that it is about 70%. So they are on par with the higher end TFT Panels.

http://www.ipctechnology.com/support...olor_gamut.htm

Are there any other options? 75Hz will also do. Any low resolution IPS panels out there?

I'm probably going to get the CRTs anyways...
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