The Canon EF 28mm f/1.8 USM Lens is currently Canon's fastest 28mm lens . And the only wider angle lens that is faster (wider aperture) is the Canon EF 24mm f/1.4L II USM Lens . My first thought upon removing the 28 f/1.8 from the box was that it was very similar to the Canon EF 20mm f/2.8 USM Lens...