The humble iPhone camera flash, about the only thing it is useful for is as a torch. Well a new app called External Flash is here to change that. The app has two functions to set your phone as a trigger or a slave.
I think it’s a pretty neat idea. How many times have you tried to provide some sort of extra light for a friend who is trying to shoot at night. With a little DIY work you could create a little softbox to hold a few of your friends iPhones and then boom iPhone photography just took a step into the strobist world.
The app is free for the time being so hurry over to the app store and get it before it gets a price tag.