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Tamron 20mm F2.8 Di III OSD M1:2

Sony E Autofocus

Tamron 20mm F2.8 Di III OSD M1:2

Focal length
20 mm
Aperture
f/2.8
Weight
220 g
Filter diameter
67 mm
Min. focus distance
11 cm
Length
64 mm
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At a Glance

This 20 mm ultra-wide prime for full-frame Sony E reaches a magnification of 1:2 with a minimum focus distance of 11 cm. At 220 g it is compact, and its maximum aperture is f/2.8. The wide field of view suits landscape and architecture, while the close focus suits macro and product shots.

Good for

  • Macro
  • Product
  • Landscape
  • Architecture

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/2.8
Max. aperture (max. zoom)
f/2.8
Min. aperture
f/22
Elements
10
Groups
9
Weight
220 g (0.49 lb)
Filter diameter
67 mm
Min. focus distance
11 cm (4.33 in)
Max. magnification
1:2 (0.5×)
Length
64 mm (2.52 in)
Diameter
73 mm (2.87 in)
Released
January 2020

Manufacturer data: tamron.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 Tamron 20mm F2.8 Di III OSD M1:2 fit?

The Tamron 20mm F2.8 Di III OSD M1:2 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

Tamron 20mm F2.8 Di III OSD M1:2 compared

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

LensTamron 20mm F2.8 Di III OSD M1:2Viltrox AF 20mm F2.8Sigma 20mm F2.0 DG DN | ContemporaryTokina Firin 20mm F2 FE AF
Focal length20 mm20 mm20 mm20 mm
Max. aperturef/2.8f/2.8f/2f/2
Weight220 g157 g370 g464 g
Filter diameter67 mm52 mm62 mm62 mm
Min. focus distance11 cm19 cm22 cm28 cm
Length64 mm59.5 mm74.4 mm81.5 mm
Autofocusyesyesyesyes
Image stabilizationnononono
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Tamron 20mm F2.8 Di III OSD M1:2: FAQ

Does the Tamron 20mm F2.8 Di III OSD M1:2 have autofocus?

Yes, the Tamron 20mm F2.8 Di III OSD M1:2 has autofocus.

Does the Tamron 20mm F2.8 Di III OSD M1:2 have image stabilization?

No, the Tamron 20mm F2.8 Di III OSD M1:2 has no stabilization of its own. On cameras with in-body image stabilization (IBIS) the image is still stabilized.

How much does the Tamron 20mm F2.8 Di III OSD M1:2 weigh?

The Tamron 20mm F2.8 Di III OSD M1:2 weighs 220 g. It is 64 mm long with a diameter of 73 mm.

What filter size does the Tamron 20mm F2.8 Di III OSD M1:2 use?

The Tamron 20mm F2.8 Di III OSD M1:2 takes 67 mm screw-in filters.

How close can the Tamron 20mm F2.8 Di III OSD M1:2 focus?

The minimum focus distance of the Tamron 20mm F2.8 Di III OSD M1:2 is 11 cm, measured from the sensor plane.

Is the Tamron 20mm F2.8 Di III OSD M1:2 a full-frame lens?

Yes, the Tamron 20mm F2.8 Di III OSD M1:2 covers full frame. On APS-C cameras its field of view equals 30 mm in full-frame terms.

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