The Rokinon (or Samyang) 35mm f/1.4 is a fast prime lens for Canon EF and EF-S cameras.  The lens is fully manual, with aperture and focus controls on the barrel.  It’s slightly wide-angle on a fullframe camera like the Canon 5D series, and “normal” on a crop factor camera.

Overall, this lens is a fantastic performer if you don’t mind manual focusing.  Perhaps surprisingly, we like it better than the Canon 35mm f/1.4L.  Very subtle vignetting is undetectable by f/2.  Mount filters with the 77mm front threads.  Close-focuses to 0.3m.