Excuse me, what is flicker? Use and function of stroboscopic function

As far as ordinary photography is concerned, a photo can only record the image of the subject at a certain moment, but can't record its running process. In sports photography, photographers use high-speed motors with multiple exposures to complete the shooting of athletes' continuous movements. Nowadays, most digital cameras do not have the function of multiple exposures, but continuous motion can also be recorded by stroboscopic technology. You can see the shooting effect of 4-fold flash from the number of characters in the figure below. What is a frequency spark? Strobe, also known as continuous flashing, records the continuous motion process of moving objects on the screen with the continuous flashing of electronic flash. Strongpoint's frequency and flash intensity can be set by buttons. Some strobe settings are hidden in the menu and need to be set by buttons. Strobe is an advanced flash function, which is generally only available in professional flash, such as Canon 580EX II, Nikon SB-800 and Sony F56AM.

Strobe is a complicated technology in flash photography, provided that there is a flash with stroboscopic function. The stroboscopic flash can flash continuously in a very short time like a machine gun after being fully charged. When shooting a moving object, you can leave a few to dozens of images on the screen, which is an effect that people usually can't observe. Different from the multiple exposure mode of the camera, when shooting with strongpoint, the shutter of the camera is always open during the whole action, and the number of strongpoint is the number of recorded images. Therefore, when shooting with strobe, the ambient light should not be too bright, and the deeper the background, the better, so that the subject on the picture can be clearer.

Use of frequency flicker

When using stroboscopic function, we need to pay attention to the coordination of shutter speed, try to think about the number and duration of stroboscopic before shooting, and set the appropriate shutter speed. In addition, photographers can also use off-camera flash to achieve the unique stroboscopic effect of light and shadow.

How to master the exposure of stroboscopic photography? If several images are separated from each other, the exposure is calculated according to the usual single flash. If several images are closely connected and partially overlapped, the exposure of these images will increase with the increase of flash times. Therefore, when overlapping flashes, the exposure should be reduced by 1-2 aperture. In order to provide a larger range of motion for the moving body and facilitate the recording of the movements of the moving body at various stages, it is best to use a wide-angle lens when shooting. In order to be more sure, it is best to conduct several experiments before shooting, so that the moving body or character can practice several times more within a certain shooting range, so that the two sides can cooperate with each other and the shooting can be sure.