Freezing Motion with Flash / Flash Duration

The following two links take you to some excellent articles discussing freezing motion with flash. Quite a hard thing to explain, but these guys make it a breeze.

Rob Galbraith DPI: Stopping action with the Paul C. Buff Einstein 640 monolight

AND

http://strobist.blogspot.com/2010/06/rise-and-fall-of-machines-understanding.html

Our rental inventory is made up entirely of Broncolor flash gear, and one of the main reasons is that their high end packs offer the fastest, most powerful flash duration of any brand, including Profoto.

Both the Grafit, and Scoro packs are formidable in the flash duration department, and we consistently supply them to photographers needing to achieve action stopping imagery.

One trick is to also use twin heads on these packs because you are sharing the power over two separate capacitors (regardless of weather you are plugging them in to the same pack / or two packs) and getting fast flash duration.

You will note that Broncolor measures their duration with T0.1 We stock both the Grafit A4 and the Scoro A4s, along with twin heads.