Camera Labs

I have just taken delivery of some high speed flash equipment from highspeedflash dot com. These are the very first water splash shots taken with a "Pro" unit (discharge time 50us).



This is not a studio set up yet for pretty pictures, just a measurement of stopping power and exposure. ISO100, f#22, 4-feet, Canon 40D, 100mm macro lens.

If I get some time later today I will try out the "Ultra" unit - discharge time 9us!!!

Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/

Looks like fun But for perspective, any idea what a "normal" flash pulse time is?

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.

A "normal" flash pulse depends on the energy you work at. A full power pulse from a typical camera mounted flashgun can easily reach 1ms (1000 us or 1/1,000 th second). If you cut power down to 1/64th or so, where you have around a Joule or 2 of energy to play with, you can get down to 25us or 1/40,000 th second.

The "Pro" unit is 150 Joules in 1/20,000 th second.
The "Ultra" unit is 30 Joules in 9us, that's less than 1/100,000 th second.

Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/

Thanks for the shedding light on the subject

_________________
Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.