Principle: "Photographic equipment" After reading everything you want to know about the principle of roller shutter, there should be two solutions: using global shutter, which fundamentally solves the problem of CCD sensor using global shutter, but SLR/photographic cameras are becoming less and less, mainly because of high sensitivity and high cost; CMOS with global shutter around 1 inch is very expensive, which is more expensive than CMOS used in APS-C. The main disadvantage of global shutter CMOS is that the number of components per pixel increases and the filling factor decreases, so it is difficult to design a sensor with high pixel number. In addition, the sample-and-hold unit will introduce new noise sources. At present, only Micron and Cypress produce CMOS sensors with global shutters, which are mainly used for machine vision and ultra-high-speed photography. At present, the highest resolution is 4m (up to 20 1 1.3.3). Slow down the moving speed of the subject/camera and solve the curve. Some videos can be quickly put down later ... so the final result remains the same. Like many racing movies, it actually starts slowly, and then plays quickly ... (Safety is the main reason). Lower the shutter to solve the curve, especially if your camera has a mechanical shutter (usually a SLR), and shoot (a single photo, not a video) with the shutter within the "highest flash synchronization speed". Because the mechanical shutter is usually used, the whole image sensor can be cleared at the initial stage of exposure to achieve a global shutter. If there is no mechanical shutter, it still has a certain effect. Because the shutter speed is slow and the picture is not fixed, the jelly effect will not be clear if the motion is blurred. It can be seen that neither scheme is so ideal. Especially when shooting video, it is almost certain to be the shutter. The rest can only be handed over to the machine performance, and the scanning speed of the shutter has not changed.