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Hdtv Buying Guide: Making Sense Of The Specifications

#1 User is offline   PCWorld 

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Posted 24 November 2009 - 07:57 PM

Post your comments for HDTV Buying Guide: Making Sense of the Specifications here
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#2 User is offline   davidrayrob 

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Posted 29 November 2009 - 02:15 AM

I looked at the refresh rates (60HZ,120HX and 240Hz) and honestly I can't see much of a difference. The HDTV's offering faster refresh rates are way more expensive and (I think) frankly not worth all the extra cash. I do think however that 1080P is a wise chioce over 720P when viewing eye-candy movies, especially animated ones like Pixar. The detail and resolution in a 1080 set is obviously superior.
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#3 User is offline   lpollack 

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Posted 25 May 2010 - 08:06 PM

Why does this article claim, "Contrast is probably the most important factor in determining image quality after resolution" whereas your article, "Geek 101: LCD and Plasma Basics," has a whole section on why "contrast ratios are meaningless." (http://www.pcworld.c...sma_basics.html)
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#4 User is offline   AlfredPoor 

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Posted 30 July 2010 - 07:02 AM

View Postlpollack, on 25 May 2010 - 08:06 PM, said:

Why does this article claim, "Contrast is probably the most important factor in determining image quality after resolution" whereas your article, "Geek 101: LCD and Plasma Basics," has a whole section on why "contrast ratios are meaningless." (http://www.pcworld.c...sma_basics.html)


The difference is important. The actual contrast of a display is probably the most important factor for image quality. Unfortunately, the contrast ratio SPECIFICATIONS cited by the manufacturers are nearly useless at predicting the observed contrast ratio when actually watching video on the set.

Alfred Poor
HDTV Almanac
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#5 User is offline   DTNick 

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  Posted 01 March 2011 - 10:12 PM

Late to this comment thread (by 6 or so months--whatever)--but I echo what Alfred said. *Contrast* is important, but the *contrast ratio* metric that TV vendors push is largely a meaningless spec number.

--Nick
PCW Assistant Editor
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#6 User is offline   waldojim 

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Posted 01 March 2011 - 10:19 PM

View Postdavidrayrob, on 29 November 2009 - 02:15 AM, said:

I looked at the refresh rates (60HZ,120HX and 240Hz) and honestly I can't see much of a difference. The HDTV's offering faster refresh rates are way more expensive and (I think) frankly not worth all the extra cash. I do think however that 1080P is a wise chioce over 720P when viewing eye-candy movies, especially animated ones like Pixar. The detail and resolution in a 1080 set is obviously superior.


The big difference you will see is in 24FPS source material. It will appear considerably smoother on 120hz displays than 60hz displays. Beyond the 120 (the 240's and up) is pure marketing gimmick.
"There is a cult of ignorance in the United States, and there always has been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'" -- Isaac Asimov

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#7 User is offline   waldojim 

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Posted 01 March 2011 - 10:21 PM

View PostDTNick, on 01 March 2011 - 10:12 PM, said:

Late to this comment thread (by 6 or so months--whatever)--but I echo what Alfred said. *Contrast* is important, but the *contrast ratio* metric that TV vendors push is largely a meaningless spec number.

--Nick
PCW Assistant Editor


This is partly because they don't actually cite the real contrast ratio. Just some "Dynamic" Full on/Full off number... There needs to be industry standardization to these tests.
"There is a cult of ignorance in the United States, and there always has been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'" -- Isaac Asimov

Steam Machine: MSI 970A-G46, AMD Phenom 955 @ 4.0Ghz, 8GB Gskill ram @1600mhz, 128GB Plextor M5s, EVGA GTX 550Ti
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