STE P BY STE P
Slow slync flash might sound complicated, but you just have to take it one step at a time...
01 Fade to black
Put up a plain backdrop and turn on your continuous light. Keep your ISO at 200, and your shutter speed at roughly 4 secs. Experiment with the time, though, as what works will depend on how fast the dancer moves. An aperture of f/10 will give you a good depth of field.
02 Take remote control
We set our camera on a tripod and used the Nikon WMU app on our smartphone to view the scene and trigger the shutter. Not all bodies have this connectivity – if yours doesn’t, you could use a remote shutter release or your camera’s self-timer to avoid camera shake.
03 Go wireless
Put the flash on a light stand with a wireless receiver attached (we used a Pocketwizard Flex TT5). Put the wireless trigger on your camera. Aim the flash at the right-hand end of the frame, and the continuous light, floor lamp or desk lamp at the left-hand end.
04 Raise the curtain
To set your camera to rear-curtain sync, press the flash button on your camera body and scroll the wheel until it displays: REAR and the flash symbol. Not all bodies are the same, so check your manual if you get stuck (you may find it’s in the menu on your camera).
05 Strike a balance
You’ll need to balance the two lights (continuous and flash), so turn them on one at a time, starting with the continuous light. Once you’re happy with the effect of this ‘ambient’ light, turn it off and do the same with the flash, adjusting the power manually as needed.
06 Get dancing!
Once you’re all set up, it’s time to get dancing. Have your dancer move from left to right across the frame, and try to time the exposure so that it starts when they are at the left of the frame, and ends when they get to the far right. You may need to experiment with shutter speed.