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Sirui Swift 20mm F2.4

Sony E Autofocus

Sirui Swift 20mm F2.4

Focal length
20 mm
Aperture
f/2.4
Weight
207 g
Filter diameter
58 mm
Min. focus distance
20 cm
Length
62.3 mm

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At a Glance

The Sirui Swift 20mm F2.4 is an ultra-wide prime for full frame (Sony E-Mount). It covers 20 mm at f/2.4. It has autofocus and weighs 207 g. Minimum focus distance is 20 cm, maximum magnification 1:7.35.

Good for

  • Landscape
  • Architecture
  • Interiors
  • Travel

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

Technical Specifications

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Min. focal length
20 mm
Max. focal length
20 mm
Max. aperture (min. zoom)
f/2.4
Max. aperture (max. zoom)
f/2.4
Min. aperture
f/16
Elements
11
Groups
9
Weight
207 g (0.46 lb)
Filter diameter
58 mm
Min. focus distance
20 cm (7.87 in)
Max. magnification
1:7.4 (0.14×)
Length
62.3 mm (2.45 in)
Diameter
69.5 mm (2.74 in)
Announced
October 2026

Manufacturer data: store.sirui.com

Last checked: October 29, 2026 (against the manufacturer data) · How we check

Simulate depth of field and angle of view

Compare with other lenses

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Which cameras does the Sirui Swift 20mm F2.4 fit?

The Sirui Swift 20mm F2.4 is a full-frame lens for Sony E-Mount cameras. On full-frame bodies it uses the whole sensor; on APS-C Sony E-Mount cameras its field of view equals 30 mm in full-frame terms.

Sony E-Mount cameras

Full frame:
Sony A7R VI, Sony A7 V, Sony FX2, Sony A1 II, Sony A9 III, Sony A7C II, Sony A7CR, Sony ZV-E1, Sony A7R V, Sony A7 IV, Sony A1, Sony FX3, Sony A7S III, Sony A7C, Sony FX6, Sony A7R IV (A7R IVA), Sony A9 II, Sony FX9, Sony A7 III, Sony A7R III (A7R IIIA), Sony A9, Sony A7R II, Sony A7S II, Sony A7 II, Sony A7S, Sony A7, Sony A7R
APS-C:
Sony ZV-E10 II, Sony A6700, Sony FX30, Sony ZV-E10, Sony A6600, Sony A6100, Sony A6400, Sony A6500, Sony A6300, Sony QX1 (ILCE-QX1), Sony A6000, Sony A5100, Sony A3500, Sony A5000, Sony A3000, Sony NEX-5T, Sony NEX-3N, Sony NEX-6, Sony NEX-5R, Sony NEX-F3, Sony NEX-7, Sony NEX-5N, Sony NEX-C3, Sony NEX-5, Sony NEX-3

Sirui Swift 20mm F2.4 compared

Key specs side by side with the most similar Sony E-Mount lenses.

LensSirui Swift 20mm F2.4Tamron 20mm F2.8 Di III OSD M1:2Viltrox AF 20mm F2.8Sigma 20mm F2.0 DG DN | Contemporary
Focal length20 mm20 mm20 mm20 mm
Max. aperturef/2.4f/2.8f/2.8f/2
Weight207 g220 g157 g370 g
Filter diameter58 mm67 mm52 mm62 mm
Min. focus distance20 cm11 cm19 cm22 cm
Length62.3 mm64 mm59.5 mm74.4 mm
Autofocusyesyesyesyes
Image stabilizationnononono

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Sirui Swift 20mm F2.4: FAQ

Does the Sirui Swift 20mm F2.4 have autofocus?

Yes, the Sirui Swift 20mm F2.4 has autofocus.

Does the Sirui Swift 20mm F2.4 have image stabilization?

No, the Sirui Swift 20mm F2.4 has no stabilization of its own. On cameras with in-body image stabilization (IBIS) the image is still stabilized.

How much does the Sirui Swift 20mm F2.4 weigh?

The Sirui Swift 20mm F2.4 weighs 207 g. It is 62.3 mm long with a diameter of 69.5 mm.

What filter size does the Sirui Swift 20mm F2.4 use?

The Sirui Swift 20mm F2.4 takes 58 mm screw-in filters.

How close can the Sirui Swift 20mm F2.4 focus?

The minimum focus distance of the Sirui Swift 20mm F2.4 is 20 cm, measured from the sensor plane.

Is the Sirui Swift 20mm F2.4 a full-frame lens?

Yes, the Sirui Swift 20mm F2.4 covers full frame. On APS-C cameras its field of view equals 30 mm in full-frame terms.

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