In this how-to video Urs Recher and Karl Taylor demonstrate the new High Speed Sync capabilities of the Siros Lights with the new RFS 2.2 trigger. The new RFS 2.2 allows to sync your flash up to 1/8000th of a second on a DSLR, thus, enabling you to shoot with with shallow depth of field.
Check this video to see the cool effects possible with this feature.