Not just with a vintage look, the Leica M Monochrom also specialises in oh-so-vintage black and white shots. Yes, that's right, this has been designed specifically for shooting in black and white, but you'll have to dig deep for the privilege.
As mobile phone add-ons go, the Gizmon iCA is about the best there is. That's because it turns your modern Apple iPhone into a vintage rangefinder camera. No apps required.