Sigma 20mm f/1.4 DG DN Art Lens for L Mount

• Bitingly sharp results with excellent detail from an ultra wide angle fast prime lens with Sigma Art-line optical design
• Extremely well controlled aberrations including sagittal coma flare and chromatic aberration which is essential for astrophotography
• Aperture ring with lock switch and de-click setting as well as a manual focus lock to fully disable the focus ring
• Front 82mm screw-in filter thread together with rear filter mount and customisable AFL button for individual workflows
• Plenty of features for hybrid content creators to customise the lens and capture stills and video both inside and outdoors

Key Features

• Supports linear and non-linear focus ring settings
• Compatible with  to customise the lens
• Bright f/1.4 maximum aperture perfect for astrophotography, photo and video
• Low 635g weight
• Manual aperture ring with de-click and lock functionality
• Front 82mm filter thread and rear filter holder
• New Manual Focus Lock (MFL) switch to fully deactivate the focus ring
• Customisable AFL button
• Extremely sharp results
• 11-blade rounded diaphragm
• Well suppressed aberrations including sagittal coma flare
• Stepping motor delivers fast, near-silent autofocus
• Super Multi-Layer Coating, Nano Porous Coating and water and oil-repellent coating
• Dust and splash-resistant structure

Sigma 20mm f/1.4 DG DN Art Lens for L Mount Summary

Arriving with uncompromising attention to detail, the Sigma 20mm f/1.4 DG DN Art Lens for L Mount cameras delivers outstanding optical performance and usability. The ultra wide angle prime lens offers a fast f/1.4 aperture and advanced optical design for mirrorless cameras, which renders excellent detail and sharpness even when wide open. Sigma includes a number of new features which assist with astrophotography as well as other subjects for which an ultra wide lens is suitable including landscape photography and architecture. These include the ability to use multiple  with an 82mm front filter thread and rear filter holder, a Manual Focus Lock (MFL) switch to fully deactivate the focus ring and avoid accidental knocks. There’s also a Lens Heater Retainer to mount a heat strip firmly in place.

The 20mm f/1.4 DG DN Art for L Mount lens includes the ability to switch between linear and non-linear focus ring settings, when using the optional  as well as an aperture ring with de-click option. Other useful features for videography such as Sigma’s Stepping motor, which delivers fast, near-silent autofocus ensure this will be a successful lens for moviemakers as well as photographers.

Sigma 20mm f/1.4 DG DN Art Lens for L Mount in More Detail

Outstanding optical performance

The Sigma 20mm F1.4 DG DN | Art delivers highly refined results, which satisfy the demands of professional photographers and filmmakers using full-frame ,  and . The optical formula includes 17 elements arranged in 14 groups, with two SLD elements and three aspherical elements, one of which is the largest double-sided aspherical element ever produced for a . This advanced optical design suppresses a number of optical aberrations including sagittal coma flare and chromatic aberration, offering pin-sharp results across the frame, even wide-open at f/1.4.

Professional build quality

The 20mm F1.4 DG DN for L Mount meets the exceptionally high standards we expect with a robust body made from a combination of aluminium and Thermally Stable Composite (TSC) gives a sleek finish and the focus ring has a well damped, smooth action. A lockable rubber gripped petal-shaped lens hood is included, which can be securely fastened to the lens without risk of it falling off. This ultra wide angle prime lens is also ideal for longer outdoor shoots thanks to a dust and splash-resistant structure, a water and oil-repellent coating on the front element and a rubber seal around the mount.

Advanced functionality for every shooting situation

An 82mm front filter thread is built-in despite the prime lens’ wide f/1.4 aperture and ultra-wide angle-of-view. There’s also a rear filter holder, proving an effective way of utilising multiple  simultaneously, which is particularly useful for astrophotographers, who may want to attach a light pollution filter such as the  as well as a soft filter at the rear.

A manual aperture ring with lock switch is built in, which is de-clickable for smooth transition between aperture settings and useful for changing exposure seamlessly when shooting video. Sigma added a new Manual Focus Lock (MFL) switch which completely deactivates the focus ring, ensuring the focus position won’t change even if it is accidentally knocked.

A customisable AFL button is also included built into the lens, which can be customised to a range of different functions and film-makers will appreciate the fast yet near-silent autofocus stepping motor. Another new feature for astrophotographers is the Lens Heater Retainer, which is a pronounced lip around the front element to keep a heat strip firmly in place. Heat strips are commonly used to stop condensation forming on the elements when working at night.

Additional features

• Lens construction: 17 elements in 15 groups, with 2 FLD an
• Internal focus system
• Stepping Motor
• Compatible with Lens Aberration Corre
• Support for DMF and AF+MF
• Super Multi-Layer Coating, Nano Porous Coating and Water- and oil-repellent coating
• Focus Mode Switch
• Lens Heater Retainer
• Aperture Ring
• Aperture Ring De-click Swit
• Aperture Ring Lock Switch
• AFL Button
• MFL Switch
• Rear filter holder

Sigma 20mm f/1.4 DG DN Art Lens for L Mount Specifications

• Lens construction: 15 groups, 17 elements (2 FLD and 3 aspherical elements) Angle-of-view: 94.5°
• Number of diaphragm blades: 11 (rounded diaphragm)
• Minimum aperture: F16
• Minimum focusing distance: 23cm
• Maximum magnification ratio: 1:6.1
• Filter size: f82mm
• Dimensions (max diameter x length): f87.8mm x 111.2mm
• Weight: 635g

What’s in the Box

• Sigma 20mm f/1.4 DG DN Art Lens for L Mount
• Front Cap LCF-82 III
• Petal-type lens hood with lock LH878-04
• Rear Cap LCR II