The Sony E mount Rokinon 24mm f/1.4 ED AS IF UMC Lens is a prime wide-angle lens designed for both full-frame and APS-C sized sensors; when used with an APS-C sensor the 35mm-equivalent focal length is 36mm. As a standard wide-angle focal length, this lens is well-suited to working in a variety of situations ranging from landscape to street photography. Its fast f/1.4 maximum aperture is further beneficial to working in low-light conditions and for greater control over selective focus and shallow depth of field effects.
Two aspherical elements have been incorporated into the optical design to minimize chromatic aberrations in order to produce sharper images. A UMC coating has also been applied to lens elements to reduce surface reflections and prevent lens flare and ghosting for improved light transmission and more contrast-rich imagery. Additionally, the lens' manual focus design incorporates an inner-focusing mechanism to maintain the overall lens length when changing focus.