The stroboscopic technique adds a new term to your photographic vocabulary: Frequency. It’s given in Hertz (Hz) and determines how many times per second the flash will fire [see Hz explained].







10Hz



20Hz




30Hz




50Hz

The stroboscopic technique adds a new term to your photographic vocabulary: Frequency. It’s given in Hz and determines how many times per second the flash will fire.
Determining the right frequecy for your subject will depend on how fast the subject is moving and the visual effect you want to achieve
Here we show how the selection of the frequency affects how the movements of the juggler and the balls are rendered. With slow frequencies (10Hz) the balls look like floating all over the place in a random manner. Between 20 and 30 Hz, we can optimally appreciate the movements of our juggler and the paths that the balls follow on the air.
At 50Hz, we come to the limitations of 550EX flash unit and we are only able to partially appreciate the travel path of the balls.