Sigma 20mm f2 DG DN I Contemporary Lens for L-Mount

Joining Sigma’s highly-regarded Contemporary lens series is the Sigma 20mm f2 DG DN I Lens. This is a compact, lightweight and impressively versatile wide-angle prime lens with an advanced optical structure made up of 13 elements in 11 groups. It offers the same exceptional image quality we’ve come to expect from Sigma and it is well suited to landscape, architecture and travel photography.

Sigma 20mm f2 DG DN I Contemporary Lens Key Features:

• An ultra-compact, wide-aperture 20mm prime lens
• A super-wide & versatile 94.5-degree field of view
• An advanced optical structure for increasing image-quality
• An intricate pathway made up of 13 elements in 11 groups
• 3 aspherical lens elements, 1 SLD element, & 1 FLD element
• Wide, bright and impressively fast maximum f2 aperture
• Performs well in low-light & produces beautiful bokeh
• Provides a close 22cm minimum focusing distance
• Fast and accurate AF from internal focusing drive
• Super Multi-Layer Coating and NanoPorous Coating (NPC)
• Made from high-quality precision-cut aluminium parts
• Exceptionally small form factor weighing in at just 370g

Expanded Sigma 20mm f2 DG DN I Contemporary Lens Key Features:

Optical Performance

The Sigma 20mm f2 DG DN I Contemporary Lens inherits all the exceptionally high standards of optical performance seen across the Contemporary lens series. It is equipped with Sigma’s latest optical technology and an advanced and intricate optical structure that results in phenomenal image quality.

This pathway is made up of 13 elements in 11 groups, including 3 high-precision glass-moulded aspherical lens elements, 1 SLD element, and 1 FLD element to suppress a range of optical aberrations. The result of this arrangement of lenses is clearer, sharper images that require less postprocessing. In addition, the lens is equipped with a Super Multi-Layer Coating and NanoPorous Coating (NPC) that ensures minimal flare and ghosting even in backlit conditions.

Aperture Diaphragm

With a super-wide-angle field of view, 94.5° to be exact, this is a lens well suited to a range of different photographic disciplines. Aiding this is the wide, bright and fast maximum f2 aperture diaphragm. The 9-bladed aperture allows you to not only shoot in low-light conditions such as evening or even night-sky photography, but it offers enhanced control of depth of field. This is particularly effective when utilising the 22cm minimum focusing distance where you can play with perspective as well as produce beautifully circular and natural-looking bokeh.

Autofocus System

This lens is equipped with an internal focusing system that is able to match the speed of its intended camera bodies. Compatible with high-speed autofocus systems, the advanced stepping motor offers fast, quiet and impressively accurate autofocus performance. But when needs must and a more fine-tuned focus is needed, this lens features a Focus Mode Switch that allows you to utilise manual focus operation.

Japanese Craftmenship

As with the whole ‘I’ series of Sigma lenses, this 20mm f2 lens has an all-metal construction. Made from precision-cut aluminium parts, this lens is sleek, tactile and ergonomic. The use of aluminium also provides superb durability in all areas of the lens, both inside and out. As well as this, the lens is fitted with a high-precision, durable and dust/splash resistant brass bayonet mount.

Adding to its ergonomics, the lens features a cover ring between its individual focus and aperture rings that has the same hairline processing that is used in Sigma’s Art line lenses. This covering acts as a finger hold when attaching and detaching the lens to the camera body.

What’s in the box?

• 1 x Sigma 20mm f2 DG DN I Contemporary Lens
• 1 x Magnetic Metal Lens Cap (LCF62-01M)
• 1 x Petal-Type Lens Hood (LH656-03)
• 1 x Front Cap (LCF-62III)
• 1 x Rear Cap (LCRII)

FAQs:

What sorts of photography is this lens good for?

Thanks to its wide field of view and advanced optical array, this lens is suitable for a range of disciplines including landscape, architectural and night sky photography.

Are there any compatible accessories for this lens?

There are five optional accessories for this lens that can be purchased separately:

• Sigma USB Dock UD11 (L Mount only)
• Sigma WR Protector 62mm
• Sigma Protector 62mm
• Sigma WR UV Filter 62mm
• Sigma WR Circular PL Filter 62mm