What Is the Difference between Contrast Ratios

30.12.2020 0 iCODIS Official

I believe everyone is familiar with projector contrast. Contrast is involved in devices with display capabilities. The level of contrast affects the layering of the picture, so high-contrast products are required when choosing a projector. However, the contrast of the projector market is not the same. In order to make the value look good, some manufacturers will choose to mark the dynamic contrast. Only a few are labeled with native contrast, and native contrast ratio tends to be lower. So what is the difference between native contrast ratio and dynamic contrast ratio? The following is a detailed introduction for everyone.

  1. What does native contrast ratio mean?

Native contrast ratio can also be called intra-frame contrast ratio. The measurement method is to measure the ratio between the average brightness of 8 white areas and the average brightness of 8 black areas in color blocks chequered with black and white. During the test, due to some physical effects, such as glare, two adjacently displayed color blocks will react with each other, causing crosstalk. Therefore, the value of the native contrast ratio will be lower, but correspondingly, the contrast is closer to the actual situation, and the quality of the displayed image can be more clear.

  1. What does dynamic contrast ratio mean?

Dynamic contrast ratio is also known as inter-frame contrast ratio, also known as FOFO contrast ratio. The measurement method is to test the brightness ratio of the display screen when the screen is completely white and black. It can be found that the level of dynamic contrast can only guarantee the brightness of bright scenes, and dark scenes are sufficiently dark. Therefore, dynamic contrast is only aimed at changes in light and dark scenes, allowing users to see the changes in light and dark transitions more clearly, but it does not indicate the contrast in a picture.

3.The difference between native contrast ratio and dynamic contrast ratio

In other words, the level of native contrast can intuitively indicate the quality of the displayed picture, while the level of dynamic contrast hardly contributes to the picture quality, and can be mainly used to solve the light leakage phenomenon that is likely to occur when the picture is completely black. The measurement methods of native contrast and dynamic contrast are different, resulting in the value of native contrast being much smaller than dynamic contrast. In order to highlight their products, some businesses often choose dynamic contrast with a value of tens of thousands, because the comparison of native contrast may not have an advantage or even have a disadvantage.

As it can be seen from the above, it is the native contrast ratio that determines the quality of the picture, and the dynamic contrast with a very high value does little to improve the picture quality. Therefore, when buying a projector, you must figure out the actual situation of the contrast, and don't be fooled by the high dynamic contrast.