This has been really well thought through, and at $70 / €50 it’s not a bad price either.
More info at Makayama
The Olloclip is a simple idea that’s destined to sell incredibly well. With everyone predominately taking photos with their mobile phone, and with the iPhone being the out and out winner in terms of Flickr uploads, the Olloclip adds a wide angle and super wide fish eye lens to your iPhone, plus it has a macro feature (although personally I’d prefer a wide angel and telephoto lens combo as opposed to a fish-eye lens, but hey, it’s still a great idea). NB: this will only work on an iPhone not the new iPad
As you can see from the links below, it’s not the first clip on lens or adapter for the iPhone, but it’s certainly the most compact and easiest to keep in your pocket.
olloclip macro photo