Sony E lens
Tamron 20mm F/2.8 Di III OSD M1:2
20 mm, f/2.8, made for full frame. It mounts natively on 8 of our APS-C cameras; on the a6400 it frames like 30 mm.
- 20 mm · 30 mm equiv. on a6400
- f/2.8
- 67 mm filter
- 220 g
- Weather-sealed
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On your camera
The view, the weight with the camera (battery and card included) and what the maker says about each pair. Tamron publishes the cameras this lens supports and its firmware updates on its own site. It is made for full-frame sensors and covers APS-C with room to spare.
| Camera | View (35 mm equiv.) | Weight with camera | Fit and maker's notes | Kit |
|---|---|---|---|---|
| Sony a6000 | 30 mm | 564 g | Fits and works
| |
| Sony a6100 | 30 mm | 616 g | Fits and works
| |
| Sony a6400 | 30 mm | 623 g | Fits and works
| |
| Sony a6600 | 30 mm | 723 g | Fits and works | |
| Sony a6700 | 30 mm | 713 g | Fits and works | |
| Sony ZV-E10 | 30 mm | 563 g | Fits and works
| |
| Sony ZV-E10 II | 30 mm | 597 g | Fits and works
| |
| Sony FX30 | 30 mm | 866 g | Fits and works |
Tamron's latest firmware for this lens: version 3, published 28 Mar 2022 (as of 4 Nov 2026). Each linked page says how to install it.
What it frames
From 3 m back it takes in a scene about 3.5 × 2.3 m on the a6400: about 7 people standing shoulder to shoulder.
At its closest (11 cm from the sensor) a subject about 4.7 cm wide fills the frame of the a6400.
On the a6400, to scale
Other macro and close-up lenses for Sony E
The nearest in focal length, and what each changes against the 20mm F/2.8 Di III OSD M1:2. Specifications only: we have not compared their pictures.
- Sigma 24mm F3.5 DG Contemporary36 mm equiv. · f/3.5 · 230 g · 55 mm0.6 stop darker, 10 g heavierCompare
- Tamron 24mm F/2.8 Di III OSD M1:236 mm equiv. · f/2.8 · 215 g · 67 mm5 g lighterCompare
- Sony E 30mm F3.5 Macro45 mm equiv. · f/3.5 · 138 g · 49 mm0.6 stop darker, 82 g lighter, made for APS-C, not weather-sealedCompare
- Tamron 35mm F/2.8 Di III OSD M1:253 mm equiv. · f/2.8 · 210 g · 67 mm10 g lighterCompare
- Sony FE 50mm F2.8 Macro75 mm equiv. · f/2.8 · 236 g · 55 mm16 g heavierCompare
- Sony FE 90mm F2.8 Macro G OSS135 mm equiv. · f/2.8 · 602 g · 62 mm382 g heavier, stabilisedCompare
Questions about this lens
Which cameras does the Tamron 20mm F/2.8 Di III OSD M1:2 fit?
8 APS-C cameras in our catalogue: a6000, a6100, a6400, a6600, a6700, ZV-E10, ZV-E10 II, FX30. It is made for full frame, so it also fits the full-frame cameras on its mount.
What does it frame like on APS-C?
20 mm frames like 30 mm on the a6400 (1.5x).
What filter size does it take?
67 mm screw-in filters. Every lens with a 67 mm thread.
Where these facts come from
Facts from the makers' specification pages. How we check
Size, weight, filter thread, close focus and magnification are Tamron's published figures. Source: Tamron's specification page. We have not tested this lens; for image quality, read reviews from people who have.
Specifications
- Mount
- Sony E
- Made for
- Full-frame sensors (covers APS-C too)
- Focal length
- 20 mm
- Maximum aperture
- f/2.8
- Lens stabilisation
- No
- Weather sealing
- Yes, per the maker
- Filter thread
- 67 mm
- Weight
- 220 g
- Size (diameter × length)
- 73 × 64 mm
- Closest focus
- 11 cm
- Maximum magnification
- 0.5x
- Autofocus
- Yes
- Announced
- 2020
- Latest lens firmware
- Version 3, published 28 Mar 2022 (as of 4 Nov 2026)