best hdtv picture quality cnet image
r.Ex
My laptop can ONLY support S-video and VGA output. I don't have a great video card, is it necessary or possible to do HDMI? For my know, HDMI is the best way to work it. But, I have no idea whether s-video/VGA can convert to HDMI or not? also like, use adapter? BTW, how about s-video to Component TV, or other form convert signal stuff? My HDTV has all kinds of port. Thanks a lot.
Answer
S-video is very poor quality. The TV's S-video input is limited to about 720x480 resolution. The "480" is a hard limit as it is determined by NTSC standards. You can sometimes set computer display options with S-video output to higher than this, but the video card is going to be resampling, putting the information from more than one line of computer display onto one line of the screen; the result is not pretty. Forget it.
If your TV doesn't have VGA in, then your best bet would be to get a converter from VGA to component. The technical name for this is a "transcoder", but most people just call it a "converter." This is in theory a lossless conversion (it's just simple "arithmetic"). There's one shown here for $124 :
http://www.pacificcable.com/More_Pages/VGA_Component_Converters/VGA-Component-Transcoder.html
Or, for about the same price, here is a converter that goes from VGA (or component) to DVI. You can then get a DVI to HDMI cable (HDMI is the same signal as single-link DVI, just different connectors)
.
http://www.digitalconnection.com/Products/Video/dcp261.ASP
I would rather convert to VGA component, though, as the transcoder is very easy to get right - it's just a few op-amps and the signal stays in the analog domain. The VGA to DVI converter is not so easy to get right: it needs very high speed analog to digital converters. Your TV already has a set of those; why buy another set?
It is btw a myth that HDMI is better than DVI, or component or VGA for that matter, when you are talking about a 1080p TV or even a 1920x1200 computer screen. Re. HDMI vs. DVI, they carry the exact same signals as far as the picture is concerned, the HDMI standard merely defined a new connector and adds HDCP (copy protection) and audio to those same signals... but DVI can carry that stuff too.
And 1920x1200 is easily within analog's reach (RGB or component). I see on that cnet forum page a claim that "you'd still be dealing with VGA quality, which is in the same ballpark as s-video" - this is complete nonsense, and whoever wrote that has no concept of what the S-video signal is. I'm looking at a 1600x1200 screen fed by a laptop's VGA output right now. It looks as good as the screen under it, 1600x1200 DVI. Reality is that component and VGA are the same sort of signal and one can be transcoded to the other with just a few adds and subtracts (i.e. a few dollars worth of op-amps).
S-video is very poor quality. The TV's S-video input is limited to about 720x480 resolution. The "480" is a hard limit as it is determined by NTSC standards. You can sometimes set computer display options with S-video output to higher than this, but the video card is going to be resampling, putting the information from more than one line of computer display onto one line of the screen; the result is not pretty. Forget it.
If your TV doesn't have VGA in, then your best bet would be to get a converter from VGA to component. The technical name for this is a "transcoder", but most people just call it a "converter." This is in theory a lossless conversion (it's just simple "arithmetic"). There's one shown here for $124 :
http://www.pacificcable.com/More_Pages/VGA_Component_Converters/VGA-Component-Transcoder.html
Or, for about the same price, here is a converter that goes from VGA (or component) to DVI. You can then get a DVI to HDMI cable (HDMI is the same signal as single-link DVI, just different connectors)
.
http://www.digitalconnection.com/Products/Video/dcp261.ASP
I would rather convert to VGA component, though, as the transcoder is very easy to get right - it's just a few op-amps and the signal stays in the analog domain. The VGA to DVI converter is not so easy to get right: it needs very high speed analog to digital converters. Your TV already has a set of those; why buy another set?
It is btw a myth that HDMI is better than DVI, or component or VGA for that matter, when you are talking about a 1080p TV or even a 1920x1200 computer screen. Re. HDMI vs. DVI, they carry the exact same signals as far as the picture is concerned, the HDMI standard merely defined a new connector and adds HDCP (copy protection) and audio to those same signals... but DVI can carry that stuff too.
And 1920x1200 is easily within analog's reach (RGB or component). I see on that cnet forum page a claim that "you'd still be dealing with VGA quality, which is in the same ballpark as s-video" - this is complete nonsense, and whoever wrote that has no concept of what the S-video signal is. I'm looking at a 1600x1200 screen fed by a laptop's VGA output right now. It looks as good as the screen under it, 1600x1200 DVI. Reality is that component and VGA are the same sort of signal and one can be transcoded to the other with just a few adds and subtracts (i.e. a few dollars worth of op-amps).
Is it really important to have calibration on an LCD television?
Nene
Answer
Very, very few consumers need a professional display calibration. With few exceptions many of today’s displays are much improved over those of the past and have at least one display or picture mode that will provide acceptable grayscale performance straight out of the box. Consumers that purchase a good quality, well-designed display will rarely benefit from a professional calibration not to mention that such a service could potentially make your picture fidelity worse if you were unfortunate enough to hire a less than competent calibration service. Furthermore, there are many consumers that simply will not enjoy an accurate, optimized and/or “calibrated” video image while others cannot because their viewing environment is less than optimal (or in some cases because a consumer has color deficient vision.)
Like most consumers your best bet (assuming you own a reasonably well designed, well built LCD TV,) is to purchase or rent one or more of the popular display optimization (aka “calibration”) discs listed below in order to properly optimize your display’s settings. If after attempting to optimize your TV picture you’re still dissatisfied then you may want to contact one of the calibration services I’ve listed below. However, under no circumstance do I recommend that a consumer pay $250 to $400 for a professional display calibration on a television which has an MSRP of roughly less than five times the cost of the calibration.
######## RESOURCES ########
I purchased a Sony 52" XBR4 LCD TV on Best Buy?
http://answers.yahoo.com/question/index?qid=20080314095743AAGGb8x
Calibration LCD TV?
http://answers.yahoo.com/question/index?qid=20080323143544AAD8R2e
Is D6487K too low of a color temperature for an LCD TV?
http://answers.yahoo.com/question/index?qid=20080324173810AAHkg1g
How to calibrate an HDTV?
http://answers.yahoo.com/question/index?qid=20080222220308AAW29iP
(Additional resources)
________________________
Digital Video Essentials: HD Basics (Blu-ray or HD DVD)
Digital Video Essentials Pro (DVD)
http://www.videoessentials.com
Ovation Multimedia Avia II (DVD)
http://www.ovationmultimedia.com/products.html
DisplayMate (Multimedia Edition or Windows Video Edition)
http://www.displaymate.com/complete.html
(Note: “Digital Video Essentials: HD Basics” on would be the best choice if you had to pick only one disc.)
________________________
CNET’s quick guide to TV calibration
http://reviews.cnet.com/4520-6463_7-5085739-1.html
Video: How to Calibrate Your TV
http://reviews.cnet.com/Calibrate_your_TV/4660-12443_7-6534987.html
Calibrating your TV
http://sports.espn.go.com/espn/print?id=1765771&type=story
Sound and Vision Magazine - TV Tweaks - Part One House Calls
http://www.soundandvisionmag.com/article.asp?section_id=82&article_id=233&page_number=1&print_page=y
AWH - How to Calibrate a Television FAQ
http://myweb.accessus.net/~090/how2adj.html
Grayscale Calibration of Home Theater Televisions
http://www.audioholics.com/tweaks/calibrate-your-system/grayscale-calibration-of-home-theater-televisions
Learn to Calibrate your LCD Television
http://www.lcdtvbuyingguide.com/lcdtv/lcd-tv-calibration.html
Calibration 101
http://www.proavmagazine.com/industry-news-print.asp?sectionID=0&articleID=599522
Running The Gamut(s)
http://www.proavmagazine.com/industry-news-print.asp?sectionID=0&articleID=599512
Hitting The Mark
http://www.proavmagazine.com/industry-news-print.asp?sectionID=0&articleID=601342
Selling Calibration Services
http://www.proavmagazine.com/industry-news-print.asp?sectionID=0&articleID=601343
Video Display Calibration
http://www.sencore.com/products/AVRFCalibration.htm
Adjusting Five User Controls on a Display to Maximize Performance – Flash
http://www.sencore.com/newsletter/VP300.html
Calibration – What Is Wrong with This Picture?
http://www.sencore.com/newsletter/July05/WhatIsWrong.htm
Index of Articles Related to Display Calibration
http://www.sencore.com/newsletter/archivedarticles.htm#colorprocolor
TweakTV
http://www.tweaktv.com
Imaging Science Theatre 2000 Special Edition
http://www.widescreenreview.com/wsr_issue_ist.php
Michael TLV Tips
http://www.keohi.com/keohihdtv/experttips/michaeltlv/michaeltlv_tips.html
Keohi HDTV - Expert Tips - Panel of Experts
http://www.keohi.com/keohihdtv/experttips/panelofexperts.html
ISF Calibration Discussion and Information
http://www.avforums.com/forums/forumdisplay.php?f=311
AVS Forum - Display Calibration
http://www.avsforum.com/avs-vb/forumdisplay.php?f=139
AVS Forum - LCD Flat Panel Displays
http://www.avsforum.com/avs-vb/forumdisplay.php?f=166
Joe Kane Productions - Resources
http://www.videoessentials.com/resources.php
Charles Poynton:
“Brightness” and “Contrast” Controls
http://www.poynton.com/notes/brightness_and_contrast/
Gamma FAQ
http://www.poynton.com/notes/colour_and_gamma/GammaFAQ.html
Color FAQ
http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html
http://www.poynton.com/ColorFAQ.html
Color Technology and Resources
http://www.poynton.com/Poynton-color.html
http://www.poynton.com/notes/links/color-links.html
________________________
TweakTV
http://www.tweaktv.com
Imaging Science Foundation
http://www.imagingscience.com
Though there may be many other qualified individuals, the following display calibration professionals are some of the best currently available if you want or need a calibration from a competent professional. Each service provider uses high performance calibration equipment accompanied by ample experience and an excellent reputation.
W. Jeff Meier - AccuCal
http://www.accucal.org
Lion Audio-Video Consultants
http://www.lionav.com
Kevin Miller
http://www.isftv.com
Busch Home Theater
http://www.buschhometheater.com/isf_calibration.htm
Very, very few consumers need a professional display calibration. With few exceptions many of today’s displays are much improved over those of the past and have at least one display or picture mode that will provide acceptable grayscale performance straight out of the box. Consumers that purchase a good quality, well-designed display will rarely benefit from a professional calibration not to mention that such a service could potentially make your picture fidelity worse if you were unfortunate enough to hire a less than competent calibration service. Furthermore, there are many consumers that simply will not enjoy an accurate, optimized and/or “calibrated” video image while others cannot because their viewing environment is less than optimal (or in some cases because a consumer has color deficient vision.)
Like most consumers your best bet (assuming you own a reasonably well designed, well built LCD TV,) is to purchase or rent one or more of the popular display optimization (aka “calibration”) discs listed below in order to properly optimize your display’s settings. If after attempting to optimize your TV picture you’re still dissatisfied then you may want to contact one of the calibration services I’ve listed below. However, under no circumstance do I recommend that a consumer pay $250 to $400 for a professional display calibration on a television which has an MSRP of roughly less than five times the cost of the calibration.
######## RESOURCES ########
I purchased a Sony 52" XBR4 LCD TV on Best Buy?
http://answers.yahoo.com/question/index?qid=20080314095743AAGGb8x
Calibration LCD TV?
http://answers.yahoo.com/question/index?qid=20080323143544AAD8R2e
Is D6487K too low of a color temperature for an LCD TV?
http://answers.yahoo.com/question/index?qid=20080324173810AAHkg1g
How to calibrate an HDTV?
http://answers.yahoo.com/question/index?qid=20080222220308AAW29iP
(Additional resources)
________________________
Digital Video Essentials: HD Basics (Blu-ray or HD DVD)
Digital Video Essentials Pro (DVD)
http://www.videoessentials.com
Ovation Multimedia Avia II (DVD)
http://www.ovationmultimedia.com/products.html
DisplayMate (Multimedia Edition or Windows Video Edition)
http://www.displaymate.com/complete.html
(Note: “Digital Video Essentials: HD Basics” on would be the best choice if you had to pick only one disc.)
________________________
CNET’s quick guide to TV calibration
http://reviews.cnet.com/4520-6463_7-5085739-1.html
Video: How to Calibrate Your TV
http://reviews.cnet.com/Calibrate_your_TV/4660-12443_7-6534987.html
Calibrating your TV
http://sports.espn.go.com/espn/print?id=1765771&type=story
Sound and Vision Magazine - TV Tweaks - Part One House Calls
http://www.soundandvisionmag.com/article.asp?section_id=82&article_id=233&page_number=1&print_page=y
AWH - How to Calibrate a Television FAQ
http://myweb.accessus.net/~090/how2adj.html
Grayscale Calibration of Home Theater Televisions
http://www.audioholics.com/tweaks/calibrate-your-system/grayscale-calibration-of-home-theater-televisions
Learn to Calibrate your LCD Television
http://www.lcdtvbuyingguide.com/lcdtv/lcd-tv-calibration.html
Calibration 101
http://www.proavmagazine.com/industry-news-print.asp?sectionID=0&articleID=599522
Running The Gamut(s)
http://www.proavmagazine.com/industry-news-print.asp?sectionID=0&articleID=599512
Hitting The Mark
http://www.proavmagazine.com/industry-news-print.asp?sectionID=0&articleID=601342
Selling Calibration Services
http://www.proavmagazine.com/industry-news-print.asp?sectionID=0&articleID=601343
Video Display Calibration
http://www.sencore.com/products/AVRFCalibration.htm
Adjusting Five User Controls on a Display to Maximize Performance – Flash
http://www.sencore.com/newsletter/VP300.html
Calibration – What Is Wrong with This Picture?
http://www.sencore.com/newsletter/July05/WhatIsWrong.htm
Index of Articles Related to Display Calibration
http://www.sencore.com/newsletter/archivedarticles.htm#colorprocolor
TweakTV
http://www.tweaktv.com
Imaging Science Theatre 2000 Special Edition
http://www.widescreenreview.com/wsr_issue_ist.php
Michael TLV Tips
http://www.keohi.com/keohihdtv/experttips/michaeltlv/michaeltlv_tips.html
Keohi HDTV - Expert Tips - Panel of Experts
http://www.keohi.com/keohihdtv/experttips/panelofexperts.html
ISF Calibration Discussion and Information
http://www.avforums.com/forums/forumdisplay.php?f=311
AVS Forum - Display Calibration
http://www.avsforum.com/avs-vb/forumdisplay.php?f=139
AVS Forum - LCD Flat Panel Displays
http://www.avsforum.com/avs-vb/forumdisplay.php?f=166
Joe Kane Productions - Resources
http://www.videoessentials.com/resources.php
Charles Poynton:
“Brightness” and “Contrast” Controls
http://www.poynton.com/notes/brightness_and_contrast/
Gamma FAQ
http://www.poynton.com/notes/colour_and_gamma/GammaFAQ.html
Color FAQ
http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html
http://www.poynton.com/ColorFAQ.html
Color Technology and Resources
http://www.poynton.com/Poynton-color.html
http://www.poynton.com/notes/links/color-links.html
________________________
TweakTV
http://www.tweaktv.com
Imaging Science Foundation
http://www.imagingscience.com
Though there may be many other qualified individuals, the following display calibration professionals are some of the best currently available if you want or need a calibration from a competent professional. Each service provider uses high performance calibration equipment accompanied by ample experience and an excellent reputation.
W. Jeff Meier - AccuCal
http://www.accucal.org
Lion Audio-Video Consultants
http://www.lionav.com
Kevin Miller
http://www.isftv.com
Busch Home Theater
http://www.buschhometheater.com/isf_calibration.htm
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