Locking high-speed dynamic moment with off-board flash of flash lamp

Lead: In addition to being a light source for auxiliary shooting, flash can also help us capture dynamic moments that are completely invisible to the naked eye. In order to achieve this goal, we need a flash that supports manual adjustment and a flash cable or wireless flash. This technology is most suitable for shooting in a completely dark environment, using the instantaneous illumination provided by the flash to solidify the action of the subject without the speed of the shutter. Let's have a look!

According to the different light output power we set, the lighting time of the flash is slightly different. Generally speaking, when set to full light output, the flash duration of the flash may be as long as 1/500 to11000 seconds; When set to the lowest light output power, the flash time may be only 1/30000 seconds.

Capture the moment when an object enters the water.

It is best to take pictures at the moment when the object enters the water, starting with small water droplets and small objects. We can safely take pictures with ordinary remote shutter. The props we need include a clean translucent container, a colored background paper and a tripod. Fill the container with water, put it in front of the background cloth, and then put the flash lamp directly above the container. Install the camera on a tripod, set the exposure mode to manual, and set the focal length in advance. Release the subject to fall into the water, and press the shutter to capture the picture at the moment when the subject falls into the water.

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Using rapid solidification kinetics

0 1 scenery

First of all, we need a big water tank with clean walls and half a tank full of water, and then put a piece of colored cardboard with an area larger than the water tank on the back of the water tank as the background. Install the camera on a tripod and adjust the height of the tripod to keep the lens flush with the water level in the water tank.

02 camera settings

Set the camera to manual exposure and manual focus modes. Set the aperture to f/8, the sensitivity to ISO 100 or 200, and the shutter to the highest synchronous flash speed of the fuselage. Keep the subject at the given landing point and set the focus as the reference point.

Adjust the flash

Set the flash to manual flash mode and set the light output power to the lowest. Fix the flash lamp firmly on the lamp holder and place it above the water tank, with the lamp holder facing the water. Take a few pictures to check the exposure. If the picture is too bright, reduce the aperture appropriately. If the picture is too dark, increase the aperture appropriately. At this time, it is best to check the histogram of the photo to determine whether your exposure is accurate, and ensure that the flash battery is sufficient to avoid its insufficient flash intensity. When shooting, you should prevent water from splashing on the flash.