Portable led video lights: These video lights are small in size and are typically powered by a ubiquitous No. 5 battery that is easy to carry. If it is the original flash, it can also support high-speed synchronization, and the maximum synchronization speed can often reach 1/8000 seconds. One important thing to note here is that when syncing at high speeds, the flash coverage is greatly compromised, and the faster the shutter speed, the smaller the flash coverage. When shooting indoors, you can use the flash to completely illuminate the subject; when shooting outdoors, the flash can be combined with daylight in a variety of ways. No matter how you use the flash, the usual rule is that its effect should not be too conspicuous, the naturalr the better.