| Maker | Samyang Optics |
|---|---|
| Lens mount(s) | Sony E-mount |
| Technical data | |
| Type | Prime |
| Focal length | 14mm |
| Image format | 35mm full-frame |
| Aperture (max/min) | f/1.4 - f/22 |
| Close focus distance | 0.20 metres (0.66 ft) |
| Max. magnification | 1:8 (0.12x) |
| Diaphragm blades | 7 |
| Construction | 14 elements in 10 groups |
| Features | |
| Manual focus override |  |
| Weather-sealing |  |
| Lens-based stabilization | |
| Aperture ring | |
| Application | Landscape, Low-light |
| Physical | |
| Max. length | 98 millimetres (3.9 in) |
| Diameter | 86 millimetres (3.4 in) |
| Weight | 505 grams (1.113 lb) |
| Filter diameter | None |
| History | |
| Introduction | 2016 |
| Retail info | |
| MSRP | $799 USD |
The Samyang Optics / Rokinon AF 14mm F2.8 FE is an ultra wide-angle full-frame prime lens for Sony E-mount. It was announced by Samyang Optics on August 17, 2016 [1]
In photography and cinematography, a wide-angle lens refers to a lens whose focal length is substantially smaller than the focal length of a normal lens for a given film plane. This type of lens allows more of the scene to be included in the photograph, which is useful in architectural, interior and landscape photography where the photographer may not be able to move farther from the scene to photograph it.
In film and photography, a prime lens is a fixed focal length photographic lens, typically with a maximum aperture from f2.8 to f1.2. The term can also mean the primary lens in a combination lens system. Confusion between these two meanings can occur if context doesn't make the interpretation clear. People sometimes use alternate terms—primary focal length, fixed focal length, or FFL to avoid ambiguity.
The E-mount is a lens mount designed by Sony for their NEX and ILCE series of camcorders and mirrorless cameras. The E-mount supplements Sony's A-mount, allowing the company to develop more compact imaging devices while maintaining compatibility with 35mm sensors. E-mount achieves this by:
The lens is currently the widest-angle autofocus prime lens featuring a large maximum aperture of f/2.8 and coverage of Sony's full-frame sensor cameras. Though designed for Sony's full frame E-mount cameras, the lens can be used on Sony's APS-C E-mount camera bodies, with an equivalent full-frame field-of-view of 21mm.
An autofocus optical system uses a sensor, a control system and a motor to focus on an automatically or manually selected point or area. An electronic rangefinder has a display instead of the motor; the adjustment of the optical system has to be done manually until indication. Autofocus methods are distinguished by their type as being either active, passive or hybrid variants.
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane.
The Sony α7, α7R and α7S are three closely related full-frame mirrorless interchangeable-lens cameras. The first two were announced on 16 October 2013 and the third on 6 April 2014. Externally they are identical except for the model number. They are Sony’s first full-frame mirrorless interchangeable lens cameras and share the E-mount with the company’s smaller sensor NEX series.
