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Tamron Sony E mount Wide Zoom

Tamron 12-20mm f/2.8

Quick answer

The Tamron 12-20mm f/2.8 is a ultra-wide wide zoom lens covering 12-20mm at f/2.8 for the Sony E mount. Its bright maximum aperture handles indoor and evening light reasonably well.

Focal
12–20mm
Aperture
f/2.8–16
Weight
570g
Min focus
0.18m

What 12-20mm sees

Full frame crop 1.0×
94.5–122° 84–112.6° horizontal
APS-C crop 1.5× → 18–30mm
71.6–100.5° 61.9–90° horizontal

Diagonal angle of view. Frames drawn to scale at 12mm (and 20mm). Calculated from the focal length and crop factor, not measured.

Open the field-of-view calculator

Tamron 12-20mm f/2.8 specifications

Optics

Focal length
12-20mm
Maximum aperture
f/2.8
Minimum aperture
f/16
Format coverage
Full frame
Optical construction
17 elements in 12 groups
Aperture blades
12

Focus

Minimum focus distance
0.18 m
Maximum magnification
0.17×

Physical

Weather sealing
Yes
Weight
570 g
Length
119.3 mm
Diameter
90 mm

General

Brand
Tamron
Mount
Sony E
Lens type
Wide Zoom
Released
2026

Specification source: tamron.com

What can you shoot with the Tamron 12-20mm f/2.8?

At 12-20mm this is a ultra-wide wide zoom, which typically suits:

  • Landscapes and big skies
  • Architecture and interiors
  • Astrophotography and night skies

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

Frequently asked questions

What mount does the Tamron 12-20mm f/2.8 use?

It uses the Sony E mount, so it fits Sony E cameras directly.

What is the focal length of the Tamron 12-20mm f/2.8?

It zooms across 12-20mm with a maximum aperture of f/2.8. That makes it a ultra-wide lens.

Is the Tamron 12-20mm f/2.8 a prime or a zoom lens?

It is a zoom lens covering 12-20mm, so you can reframe without moving. Its maximum aperture is f/2.8.

What is the Tamron 12-20mm f/2.8 equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 18–30mm on full frame, with a 61.9–90° horizontal and 71.6–100.5° diagonal field of view. These figures are calculated from the focal length and crop factor.

Which cameras does the Tamron 12-20mm f/2.8 fit?

Any Sony E-mount camera, including Sony A1, Sony A3000, Sony A5000, Sony A5100, and Sony A6000 and 47 more.