LED display screens are often used in control rooms, TV studios, live broadcast rooms and other places. Many people will find that when shooting LED display screens, there will be waves on the screen. In fact, the professional name of this kind of wave is called moiré. When shooting on a large screen with a camera or mobile phone, there will be a series of horizontal stripes that keep beating, which will affect the shooting effect. This phenomenon is called the moiré effect.
So how do moiré patterns come about? How to choose LED display to reduce or eliminate moiré?
Low refresh LED display with moiré
1. How does the moiré pattern on the LED display screen come about?
We all know that among the parameters of the LED display, one item is the refresh rate, which refers to the number of times the LED display repeats the displayed image per second. The unit is Hertz, which means Hz. Now the LED display There are low refresh rates and high refresh rates. The mainstream ones are 1920Hz/s, 2880Hz/s, and 3840Hz/s. The higher the refresh rate, the more frequent the frequency. When the LED display screen with a low refresh rate displays the picture, if we use a mobile phone to shoot, there will be moiré, which looks like the picture is flickering, but the product with a high refresh rate does not, and the texture of the picture is more delicate and the color is more delicate. Realistic, can better restore the color of the picture.
Moiré-free high-brush LED display
2. How to solve the moiré phenomenon on the LED display?
In fact, the key to solving this problem is the selection of the refresh rate of the LED display. If you want to completely solve this problem, you must try to use a product with a high refresh rate when selecting LED display products in the early stage. Fundamentally solve this problem, although the price of the product will be slightly higher, but there will be no problems like moiré that affect the picture.
Is there any remedy for the installed LED display?
Yes, usually the following methods are used:
1. Change the shooting angle. By rotating the camera and slightly changing the shooting angle of the camera, moiré can be eliminated or reduced.
2. Change the shooting position. By moving the camera side to side or up and down, moiré can be eliminated or reduced.
3. Change the focus setting of the camera. Too sharp focus and high detail on detailed patterns can cause moiré, slightly changing the focus setting can change the sharpness and in turn help eliminate moiré.
4. Change the focal length of the lens. Different lens or focal length settings can be used to eliminate or reduce moiré.
In addition, what we need to know is that the high-refresh and low-refresh LED displays cannot be distinguished by the naked eye when playing videos or pictures. There seems to be no difference. Only through high-pixel shooting can we see the difference . Moreover, the LED display with a high refresh rate is better for the eyes, and it is more comfortable to watch for a long time, which can properly reduce the irritation to the eyes. Therefore, whether you choose to use a high refresh rate or a low refresh rate LED display must be decided according to your budget and whether you have too many shooting needs. If the budget is sufficient and you often need to shoot videos or photos, then it is best to choose a high refresh rate. LED display. #LED Display#