Interfit INT480 EX300 Single Flash Head Description. Combining all the features of the award-winning EX150 with more power & the addition of fan cooling for constant performance in a larger polycarbonate body the EX300 is another step forward in the evolution of the EX flash system. This lightweight economical studio flash gives you 300 Ws of power with step-less power variation & a 5 f-stop range for precise control. The rapid 1. 5-second recycling time ensures that youll be ready to catch every fleeting gesture a quality especially valuable in portraiture & fashion. A proportional modeling lamp lets you see the ratios between your light sources before you even take a shot resulting in more quality shots & less guesswork. Versatility drives the design of the EX300 which features wired sync wireless IR & optical flash triggering. Using the tried & test EX Bayonet fitting the EX300 offers a wide range of accessories such as softboxes beauty dishes & many more light shapers.