How to eliminate the water ripple of LED screen when taking photos

Time:2018-12-29 Views:45

We‘ve probably all noticed that when we‘re taking pictures of LED screens, we often get water ripples.So, how does the water ripple on the screen photo form? Is there any way to make it disappear? This article makes a discussion for you.

But the ripples on the LED screen, but did not get everyone‘s love, even can be said to be disgusted.Especially in a number of meetings, studios, on-site activities, such as the use of a large number of photos and video occasions, scene LED screen is full of water ripple let the original perfect activity through pictures, video spread, become defect clusters, it is not annoying.

Can the person beautiful screen beauty complements each other originally, the water ripple on the result screen lets a picture drop a few class.And serious water ripple lets direct seeding picture hit natural Mosaic, do not go up even setting, lost action completely.

The reason for the overflow of water ripples is the insufficient refresh rate of LED display screen used. At the moment of taking pictures, some lines on LED display screen are not lit, resulting in a series of water ripples.Take the screen with 1/4 scan, common cross-flow drive IC and 1000Hz refresh rate as an example, and set the exposure time of the camera to 1/1000s, 1/500s, 1/800s and 1/2000s. Let‘s take a look at the simulation diagram of the shooting effect.

It can be seen that only at the shutter speed of 1/500 second, all the rows are lit twice, and the brightness is the best.At the shutter speed of 1/800 second and 1/1000 second, part of the line will be lit up once more, resulting in different degrees of water ripples.At shutter speed of 1/2000 second, half of the lines are unlit, so you can imagine the number of water ripples.Therefore, when the refresh rate is more than 2 times the shutter speed, the shooting effect is the best. There is no water ripple.

Under the shutter speed of 1/2000 second generally used in cameras, the refresh rate of nearly 1000 for common cross-flow drive IC and 1920Hz for dual latching drive IC are not enough to avoid water ripples.Only the high-order PWM driver IC with a refresh rate of 3840Hz or above can ensure that the LED screen does not appear water ripple when taking photos.Drenzer is equipped with a standard series of LED rental screens with high definition and high order PWM drive IC, with a refresh rate greater than 3840Hz, no water ripple trouble, how to beat how beautiful.

In fashion festival, BBS meeting, wedding application opened, TV, outdoor activities, indoor activities, conferences and other application scenarios, in the face of a long short cannon the camera, video camera, led display product with high refresh rate showed clear beautiful, without a trace of water ripple, bring extreme visual experience for the customer.