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Tamron 11-20mm F/2.8 Di III-A RXD

Canon RF Autofocus

Tamron 11-20mm F/2.8 Di III-A RXD

Focal length
11–20 mm
Aperture
f/2.8
Weight
340 g
Filter diameter
67 mm
Min. focus distance
15 cm
Length
84 mm
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At a Glance

On Canon RF APS-C cameras, this ultra-wide zoom gives an equivalent focal length of 18-32 mm. The aperture is f/2.8 throughout, and at 340 g the lens is compact. A magnification of 1:4 at a 15 cm minimum focus distance allows close-ups. Landscape, architecture, interiors and astrophotography are typical uses of the Tamron 11-20mm F/2.8 Di III-A RXD.

Good for

  • Landscape
  • Architecture
  • Interiors
  • Night sky

Worth knowing

  • APS-C image circle: on full-frame cameras only usable in crop mode, at reduced resolution.

Derived from the manufacturer data, not from our own tests. How we check

Technical Specifications

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Min. focal length
11 mm
Max. focal length
20 mm
Max. aperture (min. zoom)
f/2.8
Max. aperture (max. zoom)
f/2.8
Min. aperture
f/16
Elements
12
Groups
10
Weight
340 g (0.75 lb)
Filter diameter
67 mm
Min. focus distance
15 cm at 11 mm · 24 cm at 20 mm
Max. magnification
1:4 at 11 mm · 1:7.7 at 20 mm
Length
84 mm (3.31 in)
Diameter
73 mm (2.87 in)
Released
December 2024

Manufacturer data: tamron-americas.com, tamron.com, 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 11-20mm F/2.8 Di III-A RXD fit?

The Tamron 11-20mm F/2.8 Di III-A RXD is designed for APS-C sensors. On APS-C Canon RF cameras its field of view equals 18-32 mm in full-frame terms. Full-frame bodies use it in APS-C (crop) mode, recording only part of the sensor and fewer megapixels.

Canon RF cameras

Full frame (in APS-C mode):
Canon EOS R8 Mark II,Canon EOS R6 V,Canon EOS R6 Mark III,Canon EOS C50,Canon EOS R1,Canon EOS R5 Mark II,Canon EOS C400,Canon EOS C80,Canon EOS R8,Canon EOS R6 Mark II,Canon EOS R5 C,Canon EOS R3,Canon EOS R5,Canon EOS R6,Canon EOS Ra,Canon EOS RP,Canon EOS R
APS-C:
Canon EOS R50 V,Canon EOS R100,Canon EOS R50,Canon EOS R7,Canon EOS R10,Canon EOS C70

Tamron 11-20mm F/2.8 Di III-A RXD compared

Key specs side by side with the most similar Canon RF lenses.

LensTamron 11-20mm F/2.8 Di III-A RXDSigma 10-18mm F2.8 DC DNCanon RF-S 10-18mm F4.5-6.3 IS STMCanon RF 10-20mm F4 L IS STM
Focal length11-20 mm10-18 mm10-18 mm10-20 mm
Max. aperturef/2.8f/2.8f/4.5-6.3f/4
Weight340 g270 g150 g570 g
Filter diameter67 mm67 mm49 mm–
Min. focus distance15 cm11.6 cm8.6 cm25 cm
Length84 mm62 mm44.9 mm112 mm
Autofocusyesyesyesyes
Image stabilizationnonoyesyes
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Tamron 11-20mm F/2.8 Di III-A RXD: FAQ

Does the Tamron 11-20mm F/2.8 Di III-A RXD have autofocus?

Yes, the Tamron 11-20mm F/2.8 Di III-A RXD has autofocus.

Does the Tamron 11-20mm F/2.8 Di III-A RXD have image stabilization?

No, the Tamron 11-20mm F/2.8 Di III-A RXD has no stabilization of its own. On cameras with in-body image stabilization (IBIS) the image is still stabilized.

How much does the Tamron 11-20mm F/2.8 Di III-A RXD weigh?

The Tamron 11-20mm F/2.8 Di III-A RXD weighs 340 g. It is 84 mm long with a diameter of 73 mm.

What filter size does the Tamron 11-20mm F/2.8 Di III-A RXD use?

The Tamron 11-20mm F/2.8 Di III-A RXD takes 67 mm screw-in filters.

How close can the Tamron 11-20mm F/2.8 Di III-A RXD focus?

The minimum focus distance of the Tamron 11-20mm F/2.8 Di III-A RXD is 15 cm, measured from the sensor plane.

Is the Tamron 11-20mm F/2.8 Di III-A RXD a full-frame lens?

No, the Tamron 11-20mm F/2.8 Di III-A RXD is an APS-C lens. On APS-C cameras its field of view equals 18-32 mm in full-frame terms.

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