Contrast Ratio - AVS Forum
Forum Jump: 
Thread Tools
post #1 of 4 Old 01-30-2009, 08:06 PM - Thread Starter
ivtec's Avatar
Join Date: Nov 2007
Posts: 98
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 10
Hi, have a question about Contrast Ratio like say Sony has 7000:1 and Sumsumg Has 20000:1, what are this difernces mean in terms of quality between this 2 modles? thanks.
ivtec is offline  
Sponsored Links
post #2 of 4 Old 01-30-2009, 08:25 PM
AVS Special Member
Chad B's Avatar
Join Date: Oct 2002
Location: Piqua, OH
Posts: 2,158
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 127 Post(s)
Liked: 539
That spec is so inflated it's nearly meaningless. Real world measured performance might only be 10% of that, but it varies widely from one manufacturer to the next.
It's about as bad as a little paperback sized car stereo amp that says it's 1000 watts.
Now if you have 2 Sonys and one is rated 7000:1 and the other is rated 20000:1, then you can surmise that the 20000:1 model will have darker blacks and a more vibrant picture, especially with dark movies or dark shows. But comparing a 7000:1 Sony to a 20000:1 Samsung means absolutely nothing.

ISF/THX calibrator with Jeti 1211 reference spectro
Latest reviews:Samsung UN65HU8550UN65HU9000, UN85HU8550, LG 55EC9300, LG 55EA8800 (including 3D)

Why I don't publish settings, LG OLED calibration tips, Review index and rankings, Florida tour Jan '15, Texas tour March '15
Chad B is online now  
post #3 of 4 Old 01-30-2009, 08:27 PM
AVS Club Gold
SierraMikeBravo's Avatar
Join Date: Mar 2007
Location: Topeka, KS
Posts: 1,635
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 97 Post(s)
Liked: 68
Unless they took the dark measurment with the TV turned off.

Shawn Byrne
Erskine Group
CEDIA Certified Professional EST II - HAA Level III Certified -THX Certified Professional

Design-Video & Audio Calibration Information

The original Pro Theater Layout
SierraMikeBravo is offline  
post #4 of 4 Old 01-30-2009, 10:10 PM
ChrisWiggles's Avatar
Join Date: Nov 2002
Location: Seattle
Posts: 20,730
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 15
You don't specify what type of contrast ratio measurement those are.

The two most common that you will find are an on/off contrast ratio, and an ANSI contrast ratio. They are very different, and describe contrast performance in very different kinds of situations. They are both crucially important for a high quality image.

Please read this article about contrast ratios:
ChrisWiggles is offline  
Reply Display Calibration

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off