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Compact black 20mm f/2.8 prime lens with 67mm filter thread and included hood

Tamron

Tamron 20mm f/2.8 Di III OSD M 1:2 Lens for Sony E Bundle camera lens

SKU CH-G1Y7-CT0FX

A compact ultra-wide prime lens for Sony E mirrorless cameras with a bright f/2.8 aperture, 4.3-inch minimum focus distance, 1:2 magnification, and moisture-resistant construction

  • TypeWide Angle Lens
  • CompatibilityMirrorless Camera
  • Ultra-wide 20 mm view captures expansive landscapes
  • Bright f/2.8 aperture excels in low-light astrophotography
  • 1:2 half-macro magnification at 4.3 in minimum focus
  • Compact lightweight design suits travel and street shooting
  • Moisture-resistant build with fluorine-coated front element

Ultra-wide prime for Sony E

The Tamron 20mm f/2.8 Di III OSD M 1:2 is a compact ultra-wide prime lens built for Sony full-frame mirrorless cameras. Its bright f/2.8 aperture and lightweight design suit landscape, astrophotography, travel and street photographers who want expansive perspectives without bulk. Three LD elements and one aspherical element reduce chromatic aberrations and distortion, while BBAR coating minimises flare and ghosting for enhanced contrast. The OSD autofocus motor provides fast, quiet focusing with full-time manual override.

Suited to wide-field and close-up work

Photographers needing an ultra-wide field of view with a fast aperture for low-light scenes and creative close-ups will benefit from the 4.3-inch minimum focus distance and 1:2 maximum magnification. The moisture-resistant construction and fluorine-coated front element support outdoor use. Buyers who need a longer focal length, a zoom range, or a wider maximum aperture should look at other options. The 67mm filter thread accepts standard accessories.

Consistent sharpness in extended sessions

The optical design maintains sharpness and contrast across the frame during prolonged landscape or astrophotography sessions. The OSD motor sustains quiet, precise autofocus without hunting during long exposures or time-lapse sequences. Moisture-resistant seals protect internal elements during extended outdoor use, while the fluorine coating resists dew and smudges. The rounded 7-blade diaphragm renders smooth bokeh consistently at all aperture settings.

Highlights

  • Ultra-wide 20 mm view captures expansive landscapes
  • Bright f/2.8 aperture excels in low-light astrophotography
  • 1:2 half-macro magnification at 4.3 in minimum focus
  • Compact lightweight design suits travel and street shooting
  • Moisture-resistant build with fluorine-coated front element

Specifications

TypeWide Angle Lens
CompatibilityMirrorless Camera
BrandTAMRON
ModelTamron 20mm F/2.8 Di III OSD M1:2

Questions about this item

What camera mount do I need on my mirrorless body to attach this 20mm f/2.8 lens?

The lens is built for the Sony E mount, so any full-frame or APS-C Sony mirrorless camera with that bayonet will accept it directly.

Will the 67mm filter threads on this lens match the circular polarisers I already own?

Yes, the front barrel takes 67mm filters, so your existing circular polariser, ND or protector filters will screw on without an adapter.

How can I confirm the OSD autofocus is operating correctly after I mount the lens?

Half-press the shutter; the focus should snap quickly and silently, the focus-distance scale will update, and test shots at the 4.3-inch close-focus limit should show sharp detail at 1:2 magnification.

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