Sigma 20mm F1.4 DG HSM Art

Focal length: 20 mm
Aperture: f/1.4
Weight: 1035 g
Filter diameter: –
Min. focus distance: 28 cm
Length: 154 mm

At a Glance

At 20 mm and f/1.4, this L-mount prime offers a very wide field of view and plenty of light on full frame. The lens is heavy at 1.035 kg and 154 mm long. It focuses from 28 cm, with a magnification of 0.14x. Landscape, architecture, interiors and the night sky are typical subjects.

Good for

Landscape
Architecture
Interiors
Night sky

Worth knowing

At 1 kg it is heavy: a monopod or tripod helps for longer sessions.

Derived from the manufacturer data, not from our own tests. How we check

Technical Specifications

Min. focal length: 20 mm
Max. focal length: 20 mm
Max. aperture (min. zoom): f/1.4
Max. aperture (max. zoom): f/1.4
Min. aperture: f/16
Elements: 15
Groups: 11
Weight: 1,035 g (2.28 lb)
Filter diameter: –
Min. focus distance: 28 cm (11.02 in)
Max. magnification: 1:7.1 (0.14×)
Length: 154 mm (6.06 in)
Diameter: 91 mm (3.58 in)

Manufacturer data: sigma-global.com, sigmaphoto.com

Last checked: October 13, 2026 (against the manufacturer data) · How we check

Simulate depth of field and angle of view

Compare with other lenses

Which cameras does the Sigma 20mm F1.4 DG HSM Art fit?

The Sigma 20mm F1.4 DG HSM Art is a full-frame lens for L-Mount cameras. On full-frame bodies it uses the whole sensor; on APS-C L-Mount cameras its field of view equals 30 mm in full-frame terms.

L-Mount cameras

Full frame:: Leica SL3-P,Leica SL3-S,Sigma BF,Panasonic Lumix S1II,Panasonic Lumix S1IIE,Panasonic Lumix S1RII,Leica SL3,Panasonic Lumix S9,Blackmagic PYXIS 6K,Panasonic Lumix S5II,Panasonic Lumix S5IIX,Blackmagic Cinema Camera 6K,Panasonic Lumix BS1H,Leica SL2-S,Panasonic Lumix S5,Sigma fp L,Leica SL2,Panasonic Lumix S1,Panasonic Lumix S1R,Panasonic Lumix S1H,Sigma fp,Leica SL (Typ 601)
APS-C:: Leica CL,Leica TL2,Leica TL,Leica T (Typ 701)