Tamron Sony E Prime

20mm F2.8 Di III OSD M1:2

20mm
f/2.8
Prime
220 g
Min focus 0.11 m

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Quick answer

A small wide-angle prime for Sony full-frame with 1:2 close-up capability. It weighs about 220 g and uses an OSD focus motor.

Pros

Compact at about 220 g
Close focusing to 1:2
67mm filter thread

Cons

f/2.8 is slow for low light
No stabilization

Verdict

Think of it as a small 20mm prime with a useful close-up ability.

About this lens

This 20mm f/2.8 full-frame wide-angle prime lens from Tamron fits Sony E mount cameras. The wide view suits landscapes, architecture and environmental shots.

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

Brand: Tamron
Mount: Sony E
Focal length: 20mm
Maximum aperture: f/2.8
Lens type: Prime
Format coverage: full-frame
Autofocus motor: OSD
Minimum focus distance: 0.11 m
Filter thread: 67 mm
Weight: 220 g
Length: 64 mm
Diameter: 73 mm

Specification source: wikidata.org

What can you shoot with the Tamron 20mm F2.8 Di III OSD M1:2?

Street
Landscape
Close-up details

Its bright maximum aperture handles indoor and evening light reasonably well.

Full-frame equivalent and field of view

Calculated from the focal length and crop factor. Not measured.

Sensor	Crop	Equivalent	Horizontal FOV	Diagonal FOV
Full frame	1.0x	20mm	84°	94.5°
APS-C	1.5x	30mm	61.9°	71.6°

Try the field-of-view calculator

Frequently asked questions

What does M1:2 mean?

M1:2 means a maximum magnification of 1:2, half life-size.

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

Yes. It is a Di III lens for full-frame mirrorless and also works on APS-C bodies with a crop.

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

No. The lens has no stabilization of its own, so handheld sharpness at slow shutter speeds depends on a body with in-body stabilization or a faster shutter speed.