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2010-11-04

Contrast Ratio What is the meaning what?

When buying LCD & Plasma TV, we should know that the offline, such as 15000:1 Contrast Ratio, 30000:, a 50000:1 What is offline will not be deceived.
Contrast Ratio is the ratio of black and white black and white TV can display the most. TV, which has the high contrast Ernoc. Will display a more realistic depth dimension.
I am a simple example from the movie Tarzan offline spirit I like, if TV were higher Contrast Ratio Tarzan scene running at the mouth of the cave which is quite dark, but still enough light from outside. To creep into some TV will be showing at the mouth of the cave is dark gray (not dark), but Tarzan ran deep into the cave. TV will display black in a cave deep dark realism. We see it as a dimension in deep caves will be dark. At the mouth of the cave is dark grayish. While the TV with a Contrast Ratio value low, it can not be shown completely dark black. Bristol computed in a cave or a cave, it will show a grayish black mingle all We can not see how deep the dimensions of which are shallow.


              Scene are not dark black, purple gray                           Black, dark realism.
               Contrast of the Plasma TV is older low                 Contrast of the Plasma TV is the new high 


Background can not be dark because of the LCD TV Backlight lamp light can creep out. The point remains that less than Plasma TV LCD TV Contrast Ratio on the Contrast Ratio of Plasma TV over LCD TV.
 

The meaning of numbers.50000:1 means that the brightness of the white top and white: the brightness of a black top, black.May be measured as the brightness of the white 5000 fl: Cnrr light black 0.1 fl so output is equal to 5000fL: 0.1 fL ==> 50000:1.(FL = Foot-Lambert refers to the measurement of light).
 

Dynamic Contrast Ratio.The Dynamic Contrast Ratio 1000000:1 on the lot as excellently as a measure of manufacturing LCD TV & Plasma TV itself that is not strange why the offline to the steep Because the way it is itself one way. Mold is not hard numbers.
 

Summary.The Contrast Ratio is the deep contrast of the image itself offline. This value is higher the better offline.

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