20mm F1.4 DG HSM

The ultimate F1.4 wide-angle prime for DSLRs.

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20mm F1.4 DG HSM | A

coverage

F1.4

aperture

1:7.1

magnification

950g

in weight

129.8mm

in length

HSM

focus motor

TSC

construction

Brass

mount

Made

in Aizu

from

£779

inc. VAT

Buy

Mounts: Canon EF | Nikon F | Sigma SA | L-Mount | Sony E

coverage

F1.4

aperture

1:7.1

magnification

950g

in weight

129.8mm

in length

HSM

focus motor

TSC

construction

Brass

mount

Made

in Aizu

from

£779

inc. VAT

Buy

Mount: Canon EF | Nikon F | Sigma SA | L-Mount | Sony E

The ultimate ultra-fast wide-angle prime lens for DSLRs /

This full-frame optic was the first full-frame 20mm prime ever built with an F1.4 aperture, making it one of the most desirable lenses on the market for astrophotography, weddings and interiors. Not only does the lens allow four times the amount of light on the sensor than an F2.8 lens with the same ISO and shutter speed, but the wide-aperture also creates a very shallow depth-of-field for pronounced subject separation when shooting portraits or closer-up objects.

Thanks to its advanced optical, which includes 5 SLD, 2 FLD and 2 aspherical elements, the lens has exceptional resolving power, delivering highly-detailed images with excellent sharpness and accuracy from the centre to the periphery of the frame. There is also very well-controlled coma flare, vignetting, distortion and chromatic aberration, ensuring a near-perfect image straight out of camera.

The 20mm has an exceptional optical performance, with very minimal chromatic aberration, excellent corner sharpness and very well-controlled flare.

Outstanding build quality /

The exceptional build quality of the 20mm F1.4 DG HSM is exactly as you’d expect from an Art-line lens, both in the materials used, the overall ergonomics and the quality of craftsmanship.

The exterior barrel is made of a polycarbonate called Thermally Stable Composite (TSC). Not only is this very strong and light, but it 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. This makes it ideal for use on a gimbal as the centre of gravity remains fairly constant.

To reduce flare and ghosting in bright sun, and to help protect the front element from damage if dropped, the lens has a robust fixed petal-type lens hood.

The durable brass mount is surrounded by a rubber seal to help keep out dust and moisture.

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THE 20MM F1.4 COLLECTS FOUR TIMES THE LIGHT OF AN F2.8 LENS, MAKING IT PERFECT FOR WIDE-ANGLE NIGHTSCAPES.

High-performance optics /

The 20mm F1.4 DG HSM | Art delivers outstanding optical quality, with excellent rendering of detail right into the corners even wide open at F1.4.

The lens has an advanced optical design made up of 15 elements in 11 groups, including 2 aspherical elements, 5 SLD elements and 2 FLD elements. This ensures razor-sharp results and helps to eliminate chromatic aberration, flare, distortion and vignetting.

Advanced optical coatings reduce flare and ghosting when working in bright direct sunlight, creating high-contrast images with excellent colour saturation and strong blacks.

Ideal for landscapes /

The wide angle-of-view of the 20mm F1.4 combined with its superb image quality makes this optic a perfect landscape lens. Colours are rich and accurate, and the high resolution optics are able to render an outstanding degree of detail even on the highest resolution cameras.

THE ULTRA-FAST F1.4 APERTURE MAKES THE 20MM A MUST-HAVE FOR LOW LIGHT INTERIORS.

Two wide-angle prime options /

SIGMA’s two widest-angle Art primes for DSLRs both have extremely fast apertures, which makes them excellent choices for nightscapes and interiors. The 14mm F1.8 offers a wider angle-of-view, but its maximum aperture is two thirds of a stop less wide than the F1.4 of the 20mm. This means it lets in 58% less light wide open. The two lenses are almost exactly the same length, but the 14mm is wider and heavier.

950g

in weight

129.8mm

in length

1,120g

in weight

126mm

in length

Made in Aizu /

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.

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SIGMA SELECT

Try before you buy

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.