Is 20,000:1 Dynamic contrast ratio good?

Question

i just bought a samsung 40 1080p lcd

Answer 1

20,000 to 1 is excellent.  If you do a quick search on the internet, you'll see a lot of people say the same thing as the guy above me - that 10,000 to 1 is all you really need.

Well, no, not exactly.

Different manufacturers rate the contrast ratio differently; in other words, Sony may rate their contrast ratio 1000:1, but Samsung may rate the ratio 2000:1; it's all up to translation.

What you probably don't know about is DYNAMIC ratio and STATIC/NATIVE ratio.

Yes, 20,000:1 sounds great, but is it REALLY that noticeable?  Sometimes, yes, it is.  

You want to make sure that you get the best buy?  Then I STRONGLY recommend you go to the store and view the televisions side by side; I have been researching tv's for the last 3 months and purchased a high-end Samsung LN46A650 this morning, which has a staggering 50,000:1 ratio.

Blacks are deep and as close to true black as you can get.  Take that ratio and look at something 1000:1; if you can't see the difference, then something's wrong!  And it probably isn't the TV.

Native resolution is the ACTUAL pixels on the screen.  No matter how you change your settings, the pixel count will always be the same; Dynamic is the way the lighting in the back will reflect the depth of colors; 1080p which is the higher end standard, can be found on most tv's now a days; question is, how true do you want your colors to be?  Crisp, clear, red is red, blue is blue, and black is black.....then yes, go with a higher contrasted ratio television.

If colors are negligible for you, then go with the lower end television.  

You can read more about dynamic and static at the link below.

Good luck!

Answer 2

Contrast ratio is a misleading spec, because there is no real industry standard for measuring it.

Dynamic contrast ratio is where they display a black image on the screen and measure the luminosity. They then display a white image on the screen and measure that luminosity. The ratio in luminosity is the dynamic contrast ratio. But, this is highly subject to the lighting in the room and, under varying conditions, this measurement can vary greatly. But, a good standard value is above 10,000:1.

Static contast ratio is a better measurement of contrast ratio. This is where they display a white and black checkerboard on the screen, and then measure the difference in luminosity between the white and black areas. But, this results in a "good" value being only about 5000:1.

Also, consider that the human eye is only capable of resolving a contrast ratio of 1000:1 at any given time. The human eye does change its sensitivity to light over time (it takes about a half hour for you to see in a dark room after being out in the sunlight) and the overall contrast ratio it can resolve is about 1,000,000:1 over that time. But, anything over about 1500:1 contrast ratio is really overkill.

Bottom line: if you like the way the TV displays dark images versus light images, then you have one with a good contrast ratio, dynamic or otherwise.

Answer 3

Don't listen to wowbango. Dynamic contrast is all fake, no matter how high it is. Acquire the name of the TV, and read some reviews about it. Reviews tell you the real dynamic contrast and not the dynamic one. The dynamic contrast crushes all the details in dark scenes and in bright scenes.

Answer 4

Yes it's good. Anything above 10,000:1 is really unecessary if you ask me, but the fact that it's Dynamic is better. A Dynamic contrast ratio will actually utilize the LCD's backlight and darken it to help with black levels. So yes, you have yourself a nice TV :)