E-Mount Lens/Full-Frame Format
Aperture Range: f/1.4 to f/16
Two FLD Elements and Five SLD Elements
Two Aspherical Elements
Super Multi-Layer Coating
The Sigma 20mm f1.4 DG HSM Art Lens For Sony E is an ultra-wide 20mm full frame lens with a super-fast maximum aperture of f1.4. The fast wide open aperture and wide focal length makes the lens an excellent choice for landscapes, nightscapes, astrophotography, architecture, and low-light indoor photography.
This version of the lens features a Sony E-mount to fit on all Sony E mount DSLR bodies, and will not crop or vignette on full frame bodies.
As part of the Art line within Sigma’s Global Vision series, Sigma 20mm f1.4 DG HSM Art Lens For Nikon F’ is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications.
Prime wide-angle 20mm f/1.4 lens is designed for full-frame format Sony on E mount DSLRs, and can also be used with APS-C models where it will provide a 32mm equivalent focal length.
Fast f/1.4 maximum aperture is well-suited for working in low-light conditions and also provides greater control over the focus position when using shallow depth of field techniques.
Two FLD, five SLD, and two aspherical elements have been incorporated within the lens design to correct for chromatic aberrations throughout the entire focusing range and help to ensure high image sharpness, clarity, and contrast regardless of focus point or aperture setting. This optical design also helps to control distortion and limit vignetting.
A Super Multi-Layer Coating has been applied to lens elements in order to minimise lens flare and ghosting and contribute to producing contrast-rich and colour-neutral imagery, even in backlit conditions.
The integrated HSM (Hyper Sonic Motor) realizes quick and quiet autofocusing, which is further complemented by an optimised AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time.
A rounded nine-blade diaphragm helps to produce an attractive out-of-focus quality.
Fixed petal-shaped lens hood helps to reduce lens flare when working in strong lighting conditions and also offers some protection to the front element of the lens.
The lens is constructed using a Thermally Stable Composite (TSC) material, along with traditional metals, for greater precision and use in wide temperature variations.
The bayonet mount is constructed from brass for ensured accuracy and durability.