Best Price Optics via eBay offers the Rokinon 16mm f/2.0 Ultra-Wide-Angle Lens for Canon EF, Nikon DX, Pentax, Sony Alpha, Sony E-Mount, Samsung NX, Micro Four Thirds, or Fuji X, for $299 with free shipping. That's the lowest total price we could find with any compatibility by $90, although we saw it for $49 less last summer. This aspherical lens features a removable lens hood.