The Samyang 24mm f/1.4 ED AS IF UMC Cine Prime lens (frequently branded as Rokinon) is a fast, manual-focus wide-angle lens designed for full-frame cameras, available in a Nikon mount which can be adapted for use on Canon EF-mount cameras. It is popular for low-light photography, astrophotography, and cinema due to its bright aperture and high image quality.