Ends today. Groupon has the Rokinon FE14M 14mm F2.8 Ultra Wide Angle Lenses (Sony, Canon, Nikon, Pentax or Samsung NX) for $299
with free shipping. Nikon AE-compatible lens is also available for $319
with free shipping. Features 90-degree angle of view and comes with a one-year manufacturer's warranty. These lenses are normally $325 to $390.