The 14mm is the widest Art prime and was the world’s first F1.8 ultra-wide-angle lens, making it one of the most useful lenses on the market for wide-angle astrophotography and nightscapes. Its F1.8 aperture allows the camera to gather an exceptional amount of light (twice the amount of light as an F2.8 lens), meaning a huge amount of star detail can be recorded at acceptable ISO settings without star trails forming.
With its outstanding optical quality, the lens is also perfect for landscapes, interiors and architecture, and owing to its wide aperture it can be used for full-body environmental portraits with a shallow depth-of-field.
The 14mm F1.8 boasts a very advanced optical design with no fewer than 3 FLD elements, 3 SLD elements and 4 aspherical elements, which helps to eliminate coma flare, chromatic aberration and ghosting. It represents another example of Sigma’s impressive innovation in the wide-angle lens field, and its commitment to producing high-performance optics for astrophotographers.
The superb build quality of the 14mm F1.8 DG HSM is exactly as you’d expect from an Art-line lens, both in its intuitive ergonomics and in the quality of craftsmanship.
The lens’ outer barrel is made of a polycarbonate called Thermally Stable Composite (TSC), which is not only strong and light, but has a similar thermal expansion rate to aluminium. This ensures that the interior aluminium parts and the exterior TSC parts behave in a uniform way as temperatures change.
The focus ring is rubberised for easier operation, and focusing is internal, meaning the lens never changes length.
To reduce flare and ghosting in bright sunlight the lens has a robust petal-type lens hood, and also Super Multi Layer Coating on the surface of the glass elements.
The durable brass mount is surrounded by a rubber seal to help keep out dust and moisture.
Precision brass mount with seal
Protects against dust and moisture.
Made from a strong and light polycarbonate that behaves in a similar way to aluminium.
The 14mm F1.8 DG HSM | Art for DSLRs boasts outstanding optical quality, with excellent rendering of detail right into the corners, and superb peripheral brightness, even wide open at F1.8.
The lens has an advanced optical design made up of 16 elements in 11 groups, including 4 aspherical elements, 4 SLD elements and 3 FLD elements. This design ensures razor-sharp results with very minimal transverse chromatic aberration, flare, distortion and vignetting.
An advanced Super Multi-Layer Coating helps to reduce flare and ghosting when working in bright direct sunlight, which is particularly important on an ultra-wide-angle optic.
As well as being a very capable landscape lens, the 14mm is ideal for astrophotography, given its ultra-wide aperture of F1.8. This allows it to collect four times as much light as an F2.8 lens, revealing a huge amount of star detail at relatively low ISOs in exposure times short enough to eliminate star trails.
Astro, wedding or interior photographers looking for a very fast-aperture DSLR lens with a wide angle-of-view have two options in the SIGMA range: the 14mm F1.8 and the 20mm F1.4. Both are in the Art line, both have powerful HSM focus motors and both deliver exceptional optical performance. The 20mm isn’t quite as wide-angle, but the maximum aperture is two thirds of a stop wider.
All Sigma cameras and lenses are designed, manufactured and assembled at our sole factory at Aizu in Japan. This domestic production model is unusual in today’s industry, with most imaging companies opting to outsource to other countries to reduce costs. But SIGMA believes that keeping virtually all manufacturing, processing and assembly in Aizu is essential for creating innovative, carefully thought-out and impeccably constructed products that meet the high standards demanded by professional photographers and film-makers around the world.
Sigma chose Aizu as its main production base in the early 1970s. Situated at the base of Mount Bandai in the Fukushima Prefecture, about four hours’ drive north of Tokyo, Aizu has an abundance of very clean water from mountain streams, which is essential for grinding and polishing lenses. Sigma’s founder, Michihiro Yamaki, was also drawn to this area for its workforce, who have a reputation for their craftsmanship, work ethic and attention to detail. Mr Yamaki’s son, Kazuto Yamaki, now the owner and CEO of SIGMA Corporation, has the same unwavering commitment to keeping production in Japan.
Today Sigma’s factory is more than 50,000 square feet in size, and packed full of some of the most advanced optical manufacturing technology in existence. So when you buy a Sigma camera or lens you can be sure that virtually every single component part has been manufactured and assembled by SIGMA, in Japan, with the greatest level of care and attention. We hope you enjoy using our products.
If you want to see how a particular SIGMA lens or camera performs, why not test drive it with our SIGMA Select hire service. Available for selected SIGMA lenses, short-term loans are free of charge (including shipping), with a small fee if you want to test it for longer. Refundable deposit required. Subject to availability.
16 elements in 11 groups
Angle of view
Number of diaphragm blades
9 (rounded diaphragm)
Minimum focusing distance
Maximum magnification ratio
Dimensions (diameter x length)
ø95.4mm x 126mm
Corresponding AF mounts
Canon EF | Nikon F | Sigma SA | L-Mount | Sony E
Canon EF barcode
Nikon F barcode
Sigma SA barcode
Sony E-mount barcode
Specifications are for SIGMA SA mount
A special coating applied to the front element to help repel water and oil.
This suppresses flare and ghosting by minimising reflections within the lens, ensuring punchy, high-contrast results. All lenses in the current Sigma range feature this technology.
Internal focus or an inner focus system means the lens configuration uses movable internal lens elements that adjust focus without changing the length of the lens barrel. This helps keep the centre of gravity of the lens more constant when changing focus.
Sigma’s High-response Linear Actuator motor powers the movement of the group of focusing elements. It ensures exceptionally fast, accurate and near-silent AF.
The lens has an image circle large enough to be used on a full-frame camera. It can also be used on cameras with a smaller ‘crop’ sensor, provided the mount is compatible.
The mount is the part of the lens that attaches to the camera body. A coated brass mount is used for strength, and is surrounded by a rubber seal to keep out dust and moisture.
This switch toggles between autofocus and manual focus.
The diaphragm is constructed of nine rounded blades for a circular aperture opening and round out-of-focus highlights.