Tech question, without local back light dimming how high can contrast ratio get? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 5 Old 05-27-2017, 12:46 AM - Thread Starter
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Tech question, without local back light dimming how high can contrast ratio get?

I noticed Samsung released a gaming VA monitor with 3000:1 contrast ratio (reviews verified) and I noticed the full array backlight TV's are in the 6000:1 range, so would be it be safe to assume 3k:1 is probably as good as it would get without local dimming full array?
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post #2 of 5 Old 05-27-2017, 08:18 AM
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Quote:
Originally Posted by MASKOAA View Post
I noticed Samsung released a gaming VA monitor with 3000:1 contrast ratio (reviews verified) and I noticed the full array backlight TV's are in the 6000:1 range, so would be it be safe to assume 3k:1 is probably as good as it would get without local dimming full array?
Native panel contrast as TCL has just shown with their P series can exceed 7K and 13K with local dimming enabled.
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post #3 of 5 Old 05-27-2017, 09:08 AM
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Keep in mind that native contrast measurement is done either using full-screen white image/full-screen black image (AKA "full-on/full-off" contrast) OR full screen test image using rows of black/white squares (AKA ANSI contrast measurement, which mimics closer the 25% average brightness level of most video content).

Full-on/full-off contrast figure is always higher because it is measured using full white screen reading followed by reading of full black screen whereas ANSI is measured using test image that has rows of black/white squares and brightness emanating from white squares which will "contaminate" the reading of black squares, thus lowering overall contrast measurement.

I have seen test reports for some Samsung VA panels reaching almost 6.000:1 full-on/full-off native contrast (without local dimming) and Sony/Vizio sets not too far behind, whereas LG IPS panels struggle to get above 1.200:1 native contrast.

With FALD engaged, some LCD sets such as the Sony Z9D can reach contrast level higher than 200.000:1, at least according to a very reputable online A/V site that tested it.

Last edited by MCaugusto; 05-28-2017 at 12:43 PM.
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post #4 of 5 Old 05-31-2017, 03:06 AM
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My 55" Vizio has a native contrast ratio of 8800:1 (after calibration). I even confirmed it at different luminosity levels and with 2 meters, it's real.

LG 65B7 | T95N with CoreELEC | Vizio SB3851-D0 | Calibration + Settings (TBD)
Vizio M60-D1 | T95M with LibreELEC | Calibration + Settings
Dell UP2516D | Le Potato with CoreELEC (Development/testing platform)
Vizio M55-C2 (Ex) | Calibration + Settings
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post #5 of 5 Old 05-31-2017, 03:28 AM
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The gaming monitor Eizo FG2421, a Edge Lit that has 5000:1 static contrast.
http://www.flatpanelshd.com/news.php...&id=1383107309
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