Eight indicators of LED display

　　1、 Maximum brightness

　　Refers to the brightness of each primary color of the led display screen at the highest gray level and the highest brightness under certain ambient illumination. In short, use the software to set the brightness measured in the normal direction with the light gun when the display screen is white 255. The maximum brightness of outdoor LED display screen will vary according to the use environment, because the brightness of LED display screen is required to be higher in the case of strong ambient light, so that people can see the content displayed on the screen clearly

　　2、 Color temperature

　　When we see the color of the image on the display screen is inconsistent with or different from the material, our image will be seriously distorted, which is related to the color temperature of the white balance of the LED display screen. If the human eye directly watches the display screen, the color temperature value of the white balance is relatively appropriate between 6500 and 8000K. If it is a display screen used for television broadcasting, the actual color temperature of the screen body needs to be adjusted to about 5500K, In this way, the pictures on the display screen are real after being recorded and relayed by the camera.

　　3、 Refresh rate

　　The refresh rate refers to the number of times that the information displayed on the LED screen is completely displayed per second. Generally, the human eye requires a refresh rate of more than 300Hz, that is, as long as the refresh rate exceeds 300Hz, the LED display screen will not shake when viewed with the naked eye, while high refresh can improve the brightness and color fidelity of the display screen. It can be detected with a digital camera. If it is high refresh, the image taken by the camera is very clear, without snowflake points and scanning lines. This indicator is particularly important when renting screens and broadcasting on TV.

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