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Sigma A 20mm F/1.4 DG HSM Lens
For Sony E Mount

Fixed focal-length. No zoom.Fixed focal-length. No zoom.Rectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.No thread to mount front filters.No thread to mount front filters.Autofocus LensAutofocus Lens

Lens Description

The Sigma A 20mm F/1.4 DG HSM is an ultra-wide prime designed for cameras with Full-Frame sensors. This ultra-bright prime has a 20mm focal-length.

This prime is capable of focusing down to 28cm from the imaging plane which gives it a maximum magnification of 0.14X. The lens supports autofocus and features a switch to disengage AF for focusing manually. A Super-Sonic motor inside the lens delivers very fast and relatively quiet AF.

This version has a Sony E lens mount. Follow this link to see all current compatible digital cameras: Sony E mount cameras with Full-Frame or larger sensor. Sigma also made this lens available for Canon EF, Nikon F, Sigma S, Leica L mounts.

Sigma A 20mm F/1.4 DG HSM

Sigma A 20mm F/1.4 DG HSM Specifications

Brand Sigma Model A 20mm F/1.4 DG HSM
Mount Max FLM 1X
Focal Length 20mm View Angle 94°
Max ApertureF/1.4Min ApertureF/16
Min Focus28cmMagnification0.14X
Filter Size Aperture Blades9
Size (D x L)92 x 130mm Weight950g
TiltN / A ShiftN / A
Stabilization ProtectionNone
Zoom Drive Mechanic Focus Drive AF with MF switch
Zoom Mechanism N / A Focus Mechanism Internal
Hood Fixed Focus Motor Super Sonic
Perspective RectilinearIntroduced2018-02-26

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Sigma 20mm F/1.4 Facts


Fixed focal-length. No zoom.Fixed focal-length. No zoom.Rectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.No thread to mount front filters.No thread to mount front filters.Autofocus LensAutofocus Lens
20mm Focal-Length F/1.4 Constant Aperture
No filter thread AF with MF switch
Sony E Mount 1 Max Crop-Factor
950g Lens Weight 92 x 130mm (D x L)
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