Sigma 20mm f/2 DG DN Contemporary Lens for L-Mount

Sigma 20mm f/2 DG DN Contemporary Lens for L-Mount Summary

Arriving as the widest focal width prime in the f/2 line-up, is this Sigma 20mm f/2 DG DN Contemporary Lens for L-Mount. Designed for full frame mirrorless cameras allows it to be used with all three Alliance brands – including Lumix cameras, Leica mirrorless as well as their own unique Sigma L Mount bodies.

With an ultra wide angle 94.5° field of view this prime is perfectly suited to landscapes, architecture and interiors, street photography as well as environmental portraits. The 20mm f/2 DG DN has especially well controlled sagittal coma flare, making it an excellent choice for night photography, such as stars, Milky Way and aurora shots.

Sigma has utilised their new Contemporary design which features an all-metal exterior, internal metal parts and sleek functionality. The 20mm is extremely lightweight at 370 g, perfect to bring in your camera bag for any situation without a weight penalty. Results are pleasingly high quality from the centre of the frame to the edges, thanks to a complex optical design with special elements and proprietary coatings. These reduce aberrations, control flare and ghosting and capture highly detailed, sharp images. One advantage the L-mount model offers, is the ability to choose linear or non-linear focus, for user controllable focus settings when required.

Key Features

• Inner focus system
• Stepping Motor compatible with high-speed autofocus
• Support DMF and AF+MF
• Nano Porous Coating and Super Multi-Layer Coating
• Aperture ring and Focus Mode Switch
• Mount with dust and splash resistant structure
• Support for switching between linear and non-linear focus ring settings
• Compatible with Sigma USB Dock UD-11 for Leica L Mount
• Designed to minimise flare and ghosting
• 9-blade rounded diaphragm
• Lens construction: 13 elements in 11 groups, with 1 FLD, 1 SLD and 3 aspherical elements
• High-precision, durable brass bayonet mount
• ‘Made in Japan’ craftsmanship

Sigma 20mm f/2 DG DN Contemporary Lens for L-Mount in More Detail

At its time of launch, the 20mm f/2 DG DN for Leica L is the widest model in Sigma’s Contemporary line-up of f/2 Leica L Mount mirrorless lenses. It joins the previous 24mm, 35mm and 65mm to deliver a series of advanced prime options, now from ultra wide through to short telephoto.

Superb Contemporary Lens Optical Performance

The design incorporates 13 lens elements arranged in 11 groups, with special glass in the form of 1 FLD, 1 SLD and 3 aspherical elements. These enable the 20mm F2 DG DN | Contemporary to achieve the highest level of optical performance, even when wide open, from the centre of the image to the edges, keeping pace with even the highest resolution cameras like the 61MP Sigma fp L.

The lens is based on the latest optical design technology found in Sigma lenses. The design harnesses elements to suppress a range of optical aberrations, resulting in clear and sharp images even in the extreme corners. By focusing on the suppression of sagittal coma flare users can train this lens on astrophotography to capture amazing shots of the moon, stars, Milky Way and other night sky subjects.

Sigma has included their Super Multi-Layer Coating (SMC) and Nano Porous Coatings (NPC) to ensure minimal flare and ghosting even when shooting into bright light sources. This makes it much easier to photograph backlit subjects suited to this ultra wide angle lens and still achieve punchy, high contrast results.

Exceptional Build Quality In A Compact Form

An all-metal construction with precision-cut aluminium parts give the barrel a sleek, stylish finish, and provide high durability which improves the quality of the entire design. Metal materials are also used in internal structures that slide with the operation ring for added robustness. Users can expect a tactile, ergonomic feel that make the lens a pleasure to use.

The cover ring between the focus ring and the aperture ring has hairline processing that is also used for the rear cylinder of the prestigious Art line, functioning as a finger-hold when attaching or detaching the lens to the durable brass bayonet mount.

What’s in the box

• Sigma 20mm f/2 DG DN Contemporary Lens for Leica L-Mount
• Magnetic metal lens cap (LCF62-01M)
• Petal-type lens hood (LH656-03)
• Front Cap (LCF-62III)
• Rear Cap (LCRII)

Optional Accessories

• Sigma WR UV Filter 62mm – ultraviolet light filtration and lens protection in one, with weather resistance
• Sigma WR Circular PL Filter 62mm – a high quality circular polariser with weather resistant coatings to reduce reflections and glare when shooting outdoor subjects including landscapes
• Peak Design Shell Ultralight Rain And Dust Camera Cover Small – keep harsh elements at bay when shooting outdoors
• Lenspen Hurricane Blower – every photographer needs a blower to remove dust and debris from their front lens element
• ZEISS Lens Cleaning Kit – an all-in-one lens cleaning kit with everything you need to maintain a perfect working optic

Sigma 20mm f/2 DG DN Contemporary Lens for L-Mount Specifications

• Lens construction: 11 groups, 13 elements (1 FLD, 1 SLD and 3 aspherical elements) Angle of view: 94.5°
• Number of diaphragm blades: 9 (rounded diaphragm)
• Minimum aperture: F22
• Minimum focusing distance: 22cm
• Maximum magnification ratio: 1:6.7
• Filter size: φ62mm
• Dimensions (max diameter x length): φ70mm x 72.4mm
• Weight: 370g