LED display screens are very popular in TV studios. However, the effect of TV screens varies greatly during the use of LED screens. Some are bright, clear and stable from beginning to end; some are small and unclear when viewed in a long distance. This requires us to pay attention to some problems in the selection and use of the LED display.
Studio LED display
The shooting distance should be appropriate
As mentioned in the previous discussion on dot pitch and fill factor, LED screens with different dot pitch and different fill factor have different shooting distances. Taking an LED display with a dot pitch of 4.25 mm and a fill factor of 60% as an example, the distance between the person being photographed and the screen is 4-10 meters, so that you can get a better background picture when shooting people. If the person is too close to the screen, when shooting close-up shots, the background will appear grainy, and it is easy to produce moiré interference.
Dot spacing should be as small as possible
The dot pitch is the distance between the center points of adjacent pixels of the LED display. The smaller the dot pitch, the more pixels per unit area, the higher the resolution, the closer the shooting distance can be, and of course the more expensive it is. At present, the dot pitch of LED display screens used in domestic TV studios is mostly 6-8 mm. It is necessary to carefully study the relationship between the resolution of the signal source and the dot pitch, and strive to achieve the same resolution to achieve point-to-point display, so as to achieve The best results.
The color temperature needs to be adjusted well
When the studio uses the LED display screen as the background, its color temperature should be consistent with the color temperature of the light in the studio, so that accurate color reproduction can be obtained during shooting. According to the needs of the program, the studio lighting sometimes uses 3200K low color temperature lamps, sometimes 5600K high color temperature lamps, and the LED display needs to be adjusted to the corresponding color temperature to obtain satisfactory shooting results.
Ensure a good use environment
The life and stability of the LED screen are closely related to the working temperature. If the actual working temperature exceeds the specified use range of the product, not only its life span will be shortened, but the product itself will also be severely damaged. In addition, the threat of dust cannot be ignored. Too much dust will reduce the thermal stability of the LED display and even cause leakage, which can lead to burns in severe cases; the dust will also absorb moisture, which will corrode the electronic circuit and cause some short-circuit problems that are not easy to troubleshoot, so pay attention to keeping the studio clean .
The LED screen has no seams, which can make the picture more perfect; lower power consumption, lower heat, energy saving and environmental protection; it has good consistency, can ensure the undifferentiated display of the picture; the small size of the cabinet makes it easy for the background screen to form a smooth shape The color gamut coverage rate is higher than that of other display products; it has the advantage of better weak reflection characteristics, high operational reliability, and low maintenance costs in the later period.
An LED display with many advantages must be used well in order to make its advantages appear to the fullest. Therefore, when using LED display screens in TV programs, we must choose the right LED display screens, have a deep understanding of their characteristics, and select technical products as the background for different studio conditions, program formats and requirements, so that these new technologies can maximize Use its advantages.
