http://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/ Engadget Comments for LG's new 5000:1 LCDs coming your way http://www.engadget.com/media/feedlogo.gif http://www.engadget.com en-us Copyright 2012 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/http://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/Aug 30th 2007 1:19PMhttp://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/http://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/]]>Aug 30th 2007 12:51PMhttp://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/http://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/Aug 30th 2007 1:45PMhttp://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/http://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/Aug 30th 2007 5:06PMhttp://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/http://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/Please tell me you meant to write 500:1 , because 50:1 would be absurd.

Contrast ratios DO matter .. a higher contrast ration will make the image look clearer and sharper, that's how human vision works.

Contrast ratios of 5000:1 on a LCD screen however IS a scam , as it's not a real contrast ratio but rather a "dynamic" contrast ratio and while a dynamic contrast can help with some content, it's not the same thing and marketing it as such is deception.]]>Aug 31st 2007 6:35PMhttp://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/http://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/
Also, keep in mind that nearly all manufacturers publish on/off contrast ratios and _not_ the contrast as measured by the ANSI standard. Aside from the negative effect ambient light has on contrast ratios, the on/off contrast ratio is already a misleading number. It is measured by displaying a full on (100% white) / full off (100% black) screen. While this can give some amazingly high numbers, people don't watch all-white or all-black screens. Comparing the brightest whites in one scene to the blackest blacks in another scene is not representative of any useful real-world scenario. Measuring the screens at 2 different times also allows further manipulation of the display between tests, such as switching to a different color wheel setting, changing the aperture of an iris, or taking the measurement at a more favorable location on the screen. So, in short, the whole thing is hype.

If you want to know the _real_ contrast performance numbers you need to get the ANSI standard contrast ratio--which of course no manufacturers will publish. This is determined by measuring the black and white levels at the same time on the same screen using a 16-square black and white checkerboard image. This is representative of the contrast ratio achievable at any one point in time and is what is really important to viewers. An ANSI contrast ratio of 250:1 is impressive and 600:1 is outstanding.

A good read on this subject: http://www.practical-home-theater-guide.com/contrast-ratio.html


]]>Aug 31st 2007 7:28PMhttp://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/http://www.engadget.com/2007/08/30/lgs-new-5000-1-lcds-coming-your-way/Aug 30th 2007 2:32PM