Contrast Ratio of CRT - DVDfile.com forum for DVD, Blu-Ray, and HD-DVD

Shadowman82 · 12-18-2004, 11:13 PM

Ok we all know that CRT based TVs or front projectors still have the best contrast ratio , the deepest blacks etc.

LCD, DLP or Plasma based TVs& front projectors will generally tell you their contrast ratio but does anyone actually know the contrast ratio of CRT based displays ? I sure as hell don't but it would come in handy .

plissken99 · 12-19-2004, 05:52 AM

Well, their CR's aren't listed because they can't be measured in the same way that digitals are. As digitals use colors to create black, CRT uses a lack of light. PROBABLY if they could be measured, your average CRT projector rates around 6000:1-8000:1.

videoworx · 12-19-2004, 06:20 AM

most CRT televisions have a calculated CR of 4000:1, CRT projectors about 5000:1. DLP comes closest to competing with this, followed by LCOS, D-ILA, and finally LCD and plasma. LCD rear projectors are the worst performers in CR, ranging around 200-400:1 (plasma isn't much better). If you are buying a set based purely on CR, you should take into account brightness as well. LCD's and plasma displays are about half as bright as CRT displays (some plasmas are much darker), and DLP, LCOS, D-ILA are about 2/3rds as bright.

hope that helps...

Shadowman82 · 12-19-2004, 04:22 PM

I see . Sony has just released a new LCD based front projector with a Contrast ratio of 6000:1 as was discussed in another thread so that would mean that it is almost approaching CRT standards . I hope that they will soon make LCD based TVs which that level of Contrast . I mean what the hell is stopping them ?

Anyway I think your Plasma figures are slightly outdated . Panasonic lists the contrast of it's Plasma displays at 3000:1 . You're more spot on with the LCDs which Panasonic lists at 500:1 .

It's disappointing really . I don't want a TV technology that can burn in which rules out Plasma and they're expensive anyway . CRT Rear Projectors also burn in . LCD TVs still have a weak contrast ratio and DLPs , well for some reason I don't like the picture they provide as it looks fuzzy to me , I don't believe I have seen an L-Cos in action yet .

videoworx · 12-19-2004, 05:18 PM

Quote:

Anyway I think your Plasma figures are slightly outdated .

as i mentioned, most companies inflate their CR figures ten-fold...I would refer to real-world figures, usually reported by review magazines/websites.

Iguana Man · 12-19-2004, 05:50 PM

Quote:

Originally Posted by Shadowman82

I don't believe I have seen an L-Cos in action yet .

I have !!

She's bright (and I would say easily brighter than CRT), there's nothing fuzzy about her (especially in HD/DVD), and she's got some really nice blacks (maybe too much for videophiles - as in black crush).

Lousy pics...but here ya go.

If you're ever in Jersey...let me know!

I 8 Piglet · 12-19-2004, 06:31 PM

Quote:

Originally Posted by Shadowman82

I see . Sony has just released a new LCD based front projector with a Contrast ratio of 6000:1 as was discussed in another thread so that would mean that it is almost approaching CRT standards . I hope that they will soon make LCD based TVs which that level of Contrast . I mean what the hell is stopping them ?

Well those numbers from Sony are rummered to be highly inflated. From what I have read as good as it is, it isnt approaching CRT standards. As for putting it into an RPTV, its not as necessary. You dont need as high a CR when you enclose it in a box, as it is with RP technology. However, you really should check out some of this technology in person as it is very impressive, you might be surprised at how unnoticible these "significant improvements" in CR really are difference actually is. My pj has a 2000:1 CR and my fathers has a 1000:1 and you really couldnt tell them a part.

plissken99 · 12-19-2004, 10:04 PM

Actually I found a review of that Sony pj, and after calibration they measured it around 5800:1. Not very inflated at all.

Shadowman82 · 12-19-2004, 10:46 PM

Hmm those D-ILA images look pretty good to me .

I can see the point of TVs not needing the same contrast ratio as Projectors but as Plissken99 said that Sony Projector actually manages 5800:1 so why on earth can't they make an LCD based TV with better contrast ? Surely if they can manage this in a projector they can at least make an LCD based TV that manages roughly 3000:1 or so or even 2000:1. I don't think that's too much to ask.

I have seen Grand Wega LCD Projection TVs and I love detail they provide but I do notice that their blacks are just not quit there yet .

Iguana Man · 12-19-2004, 11:05 PM

Quote:

Originally Posted by I 8 Piglet

Well those numbers from Sony are rummered to be highly inflated.

That's what I've read too.....I'd love to see the review Pliss mentions.

Pliss....can ya link us ?

Shadowman82 · 12-20-2004, 03:22 AM

Even if the actual contrast ratio was only half of what Sony claims it would still be loads better than what we get on LCD based TVs at the moment .

plissken99 · 12-20-2004, 03:47 AM

Quote:

Originally Posted by Iguana Man

That's what I've read too.....I'd love to see the review Pliss mentions.

Pliss....can ya link us ?

Zipedy bop http://www.widescreenreview.com/attr...evfeature.html

Iguana Man · 12-20-2004, 10:00 PM

Quote:

Originally Posted by plissken99

Zipedy bop http://www.widescreenreview.com/attr...evfeature.html

"Zipedy bop! Whatcha got?
I gotta a Z2, just for you!

I thank you for the link,
but my wallet says you stink!"

Damn Pliss....that thing looks sweet, but alas.....I just satiated that Upgraditous condition a mere couple of months ago! ARGGHHHHH!!!!

Shadowman82 · 12-20-2004, 11:06 PM

There you go at down to earth settings the thing can still manage 3800:1 which is loads better than what we are used to from LCD . I hope they will soon introduce this into their TVs .

plissken99 · 12-20-2004, 11:06 PM

Quote:

Originally Posted by Iguana Man

"Zipedy bop! Whatcha got?
I gotta a Z2, just for you!

I thank you for the link,
but my wallet says you stink!"

Damn Pliss....that thing looks sweet, but alas.....I just satiated that Upgraditous condition a mere couple of months ago! ARGGHHHHH!!!!

Let it go man, breathe... breathe. Upgrade when they have LCDs with 6000:1 cr, 1920x1080 res and 2000 real lumens of brightness all for under 5k, THEN upgrade.

Iguana Man · 12-20-2004, 11:32 PM

Quote:

Originally Posted by plissken99

Let it go man, breathe... breathe. Upgrade when they have LCDs with 6000:1 cr, 1920x1080 res and 2000 real lumens of brightness all for under 5k, THEN upgrade.

Guess I need to relax a bit......Thanks man!

Iguana Man · 12-20-2004, 11:43 PM

Quote:

Originally Posted by Shadowman82

There you go at down to earth settings the thing can still manage 3800:1 which is loads better than what we are used to from LCD . I hope they will soon introduce this into their TVs .

Good point...I wasn't trying to diss Videoworx cause I may be wrong on the brightness of LCoS vs. CRT, but man, that D-ILA unit from JVC is as bright as the morning Sun on a hangover morning!

videoworx · 12-21-2004, 12:48 AM

I agree about D-ILA - I saw a projector at Infocomm that was so incredibly bright (but came with an equally astonishing price tag). That Sony info looks very cool, but I can't wait for LCOS and D-ILA to drop in price...

Shadowman82 · 12-23-2004, 12:21 AM

Actually D-ILA is kind of a modified L-Cos technology . Could it be that JVC are starting to redeem themselves ? I mean generally JVC hasn't been known for top quality in recent times but yet they have released these D-ILA based displays and their 34 inch Widescreen Direct View set looks extremely good spec wise not to mention even their modestly priced DVD players have a 12bit/102Mhz D/A converter .

It's true though these D-ILA sets are expensive and so is DLP but at the moment they offer a better all around image than LCD TVs.

What I find especially frustating is when manufacturers tell you how the contrast , brightness has been improved but don't give you the numbers for contrast and lumens .

12-18-2004, 11:13 PM	#1 (permalink)
Shadowman82 Actor Join Date: Oct 2004 Location: Canada	Contrast Ratio of CRT Ok we all know that CRT based TVs or front projectors still have the best contrast ratio , the deepest blacks etc. LCD, DLP or Plasma based TVs& front projectors will generally tell you their contrast ratio but does anyone actually know the contrast ratio of CRT based displays ? I sure as hell don't but it would come in handy .

12-19-2004, 05:52 AM	#2 (permalink)
plissken99 Actor Join Date: Sep 2003 Location: Dallas, Ft Worth	Well, their CR's aren't listed because they can't be measured in the same way that digitals are. As digitals use colors to create black, CRT uses a lack of light. PROBABLY if they could be measured, your average CRT projector rates around 6000:1-8000:1. __________________ “The more things change, the more they stay the same.” Snake Plissken Plissken's DVD, HD-DVD and Blu Ray collection And Plissken's home theater

12-19-2004, 10:04 PM	#8 (permalink)
plissken99 Actor Join Date: Sep 2003 Location: Dallas, Ft Worth	Actually I found a review of that Sony pj, and after calibration they measured it around 5800:1. Not very inflated at all. __________________ “The more things change, the more they stay the same.” Snake Plissken Plissken's DVD, HD-DVD and Blu Ray collection And Plissken's home theater

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12-19-2004, 06:20 AM	#3 (permalink)
videoworx Would Make a Good Incubus Join Date: Mar 2002 Location: nowhere near Nebraska	most CRT televisions have a calculated CR of 4000:1, CRT projectors about 5000:1. DLP comes closest to competing with this, followed by LCOS, D-ILA, and finally LCD and plasma. LCD rear projectors are the worst performers in CR, ranging around 200-400:1 (plasma isn't much better). If you are buying a set based purely on CR, you should take into account brightness as well. LCD's and plasma displays are about half as bright as CRT displays (some plasmas are much darker), and DLP, LCOS, D-ILA are about 2/3rds as bright. hope that helps...

12-19-2004, 04:22 PM	#4 (permalink)
Shadowman82 Actor Join Date: Oct 2004 Location: Canada	I see . Sony has just released a new LCD based front projector with a Contrast ratio of 6000:1 as was discussed in another thread so that would mean that it is almost approaching CRT standards . I hope that they will soon make LCD based TVs which that level of Contrast . I mean what the hell is stopping them ? Anyway I think your Plasma figures are slightly outdated . Panasonic lists the contrast of it's Plasma displays at 3000:1 . You're more spot on with the LCDs which Panasonic lists at 500:1 . It's disappointing really . I don't want a TV technology that can burn in which rules out Plasma and they're expensive anyway . CRT Rear Projectors also burn in . LCD TVs still have a weak contrast ratio and DLPs , well for some reason I don't like the picture they provide as it looks fuzzy to me , I don't believe I have seen an L-Cos in action yet .

12-19-2004, 10:46 PM	#9 (permalink)
Shadowman82 Actor Join Date: Oct 2004 Location: Canada	Hmm those D-ILA images look pretty good to me . I can see the point of TVs not needing the same contrast ratio as Projectors but as Plissken99 said that Sony Projector actually manages 5800:1 so why on earth can't they make an LCD based TV with better contrast ? Surely if they can manage this in a projector they can at least make an LCD based TV that manages roughly 3000:1 or so or even 2000:1. I don't think that's too much to ask. I have seen Grand Wega LCD Projection TVs and I love detail they provide but I do notice that their blacks are just not quit there yet .

12-20-2004, 03:22 AM	#11 (permalink)
Shadowman82 Actor Join Date: Oct 2004 Location: Canada	Even if the actual contrast ratio was only half of what Sony claims it would still be loads better than what we get on LCD based TVs at the moment .

12-20-2004, 11:06 PM	#14 (permalink)
Shadowman82 Actor Join Date: Oct 2004 Location: Canada	There you go at down to earth settings the thing can still manage 3800:1 which is loads better than what we are used to from LCD . I hope they will soon introduce this into their TVs .

12-21-2004, 12:48 AM	#18 (permalink)
videoworx Would Make a Good Incubus Join Date: Mar 2002 Location: nowhere near Nebraska	I agree about D-ILA - I saw a projector at Infocomm that was so incredibly bright (but came with an equally astonishing price tag). That Sony info looks very cool, but I can't wait for LCOS and D-ILA to drop in price...

12-23-2004, 12:21 AM	#19 (permalink)
Shadowman82 Actor Join Date: Oct 2004 Location: Canada	Actually D-ILA is kind of a modified L-Cos technology . Could it be that JVC are starting to redeem themselves ? I mean generally JVC hasn't been known for top quality in recent times but yet they have released these D-ILA based displays and their 34 inch Widescreen Direct View set looks extremely good spec wise not to mention even their modestly priced DVD players have a 12bit/102Mhz D/A converter . It's true though these D-ILA sets are expensive and so is DLP but at the moment they offer a better all around image than LCD TVs. What I find especially frustating is when manufacturers tell you how the contrast , brightness has been improved but don't give you the numbers for contrast and lumens .