High-speed photography in the studio

Why is there a black border in the film? . . Quite simply, the flashing time of the light is actually very short. During the flash duration, the shutter is not fully opened, so the unopened part can't receive light, so it is black. As for why it is not fully open. . .

Seriously, these are very basic, LZ principle has not been understood, and it is a bit difficult to explain.

Let me just say the plan. To realize high-speed synchronous flashover outside the vehicle, three points must be guaranteed:

The fuselage supports high-speed synchronization (the current SLR basically supports this), and high-speed synchronization is started in the settings.

The flasher supports high-speed synchronization (this LZ is already known)

Outdoor lights support high-speed synchronization (the higher the speed, the more expensive it is, and the support to 1/8000 is simply sky-high).

To put it bluntly, LZ, your lamp doesn't support high-speed flashing, and it's useless to change the flasher even if it is the best.

In addition, shooting things that fall into the water doesn't need such a high shutter speed, mainly because of lighting skills.