Friends who play photography come in (close-up of water droplets)

The difficulty of shooting water droplets lies in the synchronous trigger of strong points.

I've photographed water droplets before, and I used strongpoint synchronous trigger (of course, you can set exactly how many milliseconds the water droplets lag to trigger the flash). In a completely dark environment, open the camera door B, because in a completely dark environment, the photoreceptor is not sensitive. When the water drops fall, strongpoint will be triggered, and the camera will only capture the image of the flash moment of strongpoint. The flash peak value of strongpoint is generally from a few thousandths of a second to 65,438+0/50,000 seconds, which makes the water drop "solidify" instantly when it falls. Similarly, the same principle is used to photograph the moment when a bullet flies out.

So it doesn't matter how many seconds your camera sets the exposure speed, as long as the shutter speed of the SLR camera is lower than the flash synchronization speed (generally 1/250s). It doesn't matter if it is set to 1 second, 2 seconds, or 1/50s, or 1/80s.

Exposure is controlled by the size of the aperture.

In this use environment, the principle of reciprocity failure is used.

For synchronization triggers, please refer to the following links.