When you think of manufacturers that create products to go hand-in-hand with the Apple iPhone, Leica probably wouldn’t come to mind. The seemingly brilliant minds at Black Design Associates hope to change that, however. The Leica i9 concept pairs an iPhone 4 with a fixed-lens rangefinder camera, and the result is nothing short of extraordinary. Slipping your iPhone 4 — black or white — into the back of the i9 brings the camera to life, activating the compact optical zoom, dedicated aperture and shutter dials, flash and light meter. Images are instantly viewable on the iPhone, where it’s safe to assume they’re stored as well. The camera back doubles as a case, but you’re probably going to want to use it with a headset, unless you like talking to a camera. There’s no sign that the i9 will even reach the prototype phase, but nobody is going to stop the high-end camera’s designer from dreaming — especially when said dreams make us weak at the knees.