Photojojo | Lenses for iPhone 4
“Photojojo takes advantage of the iPhone 4’s shortcomings by creating three attachable lenses to the iPhone’s already powerful camera. The lenses attach magnetically and are made from high quality glass, so for $40 you got a mobile DSLR (sorta).”
A wide angle/macro lens and a fisheye lens. Also works with other cell phones.
Source: The Feed