Sigma 50mm f/1.4 DG DN Art Lens (Sony E)

The Sigma 50mm f/1.4 DG DN Art Lens (Sony E) is a fast, versatile standard-length prime designed for full-frame Sony E-mount mirrorless cameras, built from the ground up specifically for mirrorless systems rather than adapted from a DSLR design. Its 50mm focal length is ideally suited for portraiture, landscapes, reportage, and street photography, with a bright f/1.4 maximum aperture that excels in low light while achieving shallow depth of field and strong subject-background separation.

Optically, the lens is built from 14 elements in 11 groups, including one SLD (Special Low Dispersion) glass element and three aspherical elements, with a double-sided aspherical surface incorporated into the focusing group to reduce element count and help improve both focus response and AF-tracking performance. Sigma’s Super Multi-Layer Coating minimizes flare and ghosting, and a rounded 11-blade diaphragm produces large, pleasing bokeh.

Autofocus is handled by Sigma’s High-response Linear Actuator (HLA), the first lens in the Art line to adopt this motor, delivering fast, smooth, and nearly silent focusing for both stills and video, along with full compatibility for Sony’s AF Assist, IBIS, and eye-detection AF features. Handling includes a focus mode switch, along with an aperture ring featuring both a click/de-click switch and a lock switch, giving photographers direct, tactile exposure control along with silent aperture adjustment for video work.

Build quality uses a Thermally Stable Composite structure that is dust- and splash-resistant, along with a water- and oil-repellent coating on the front element and a brass bayonet mount for durability. The lens has a minimum focusing distance of 17.7 in. (45cm), yielding a maximum reproduction ratio of 1:6.8 (0.15x magnification), and accepts a 72mm filter thread. It measures approximately 78.2 x 111.5mm and weighs approximately 660-670g, a notably slimmed-down, compact design for an f/1.4 lens of this focal length.

As a full-frame E-mount lens, the Sigma 50mm f/1.4 DG DN Art delivers its full 46.8° angle of view on Sony full-frame bodies while remaining compatible with Sony APS-C E-mount cameras at a narrower, 75mm-equivalent effective field of view.

Key Features
– 50mm f/1.4 standard-length prime lens (Art series) for Sony full-frame E-mount
– Native mirrorless design (built specifically for E-mount, not adapted from DSLR)
– 14 elements in 11 groups, including 1 SLD element and 3 aspherical elements
– Super Multi-Layer Coating
– High-response Linear Actuator (HLA) autofocus motor
– Compatible with Sony AF Assist, IBIS, and eye-detection AF
– Focus mode switch
– Aperture ring with click/de-click and lock switches
– Rounded 11-blade diaphragm
– Dust- and splash-resistant Thermally Stable Composite construction
– Water- and oil-repellent front element coating
– Brass bayonet mount
– Minimum focusing distance of 17.7 in. (45cm); 1:6.8 maximum reproduction ratio
– 72mm filter thread
– Approximate weight: 660-670g
– Compatible with Sony full-frame and APS-C E-mount cameras