Splash!
One Lencarta Superfast 600 behind a heavyweight Translum screen, wearing an Aputure Fresnel attachment to create a radial gradient. I use this rather than a grid as it allows me to control the fall-off for a given size of spot, plus, unlike a grid, which blocks and absorbs the light around the edge to create the fall off, a Fresnel lens focuses the light towards the centre - so you keep almost all of the light, just in a different pattern. This becomes important for motion freezing work like this as you need to keep the flash output low: these IGBT controlled lights reduce their output by shortening the duration of the flash. The SF600 is on 5.5 here - ie only half a stop above minimum power, so the flash duration will be in the 1/10000th of a second region.
Splash!
One Lencarta Superfast 600 behind a heavyweight Translum screen, wearing an Aputure Fresnel attachment to create a radial gradient. I use this rather than a grid as it allows me to control the fall-off for a given size of spot, plus, unlike a grid, which blocks and absorbs the light around the edge to create the fall off, a Fresnel lens focuses the light towards the centre - so you keep almost all of the light, just in a different pattern. This becomes important for motion freezing work like this as you need to keep the flash output low: these IGBT controlled lights reduce their output by shortening the duration of the flash. The SF600 is on 5.5 here - ie only half a stop above minimum power, so the flash duration will be in the 1/10000th of a second region.