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Tamron Canon RF mount Ultra-wide zoom

Tamron 17-70mm f/2.8 Di III-A VC RXD

Quick answer

The Tamron 17-70mm f/2.8 Di III-A VC RXD is a ultra-wide to standard zoom lens covering 17-70mm at f/2.8 for the Canon RF mount. Its bright maximum aperture handles indoor and evening light reasonably well.

Focal
17–70mm
Aperture
f/2.8–22
Filter
67mm
Min focus
0.19m
AF motor
RXD

What 17-70mm sees

APS-C crop 1.6× → 27–112mm
21.9–77° 18.3–67° horizontal

Diagonal angle of view. Frames drawn to scale at 17mm (and 70mm). Calculated from the focal length and crop factor, not measured.

Open the field-of-view calculator

Tamron 17-70mm f/2.8 Di III-A VC RXD specifications

Optics

Focal length
17-70mm
Maximum aperture
f/2.8
Minimum aperture
f/22
Format coverage
APS-C
Optical construction
16 elements in 12 groups
Aperture blades
9
Image stabilization
Yes

Focus

Autofocus motor
RXD
Minimum focus distance
0.19 m
Maximum magnification
0.21×

Physical

Weather sealing
Yes
Filter thread
67 mm
Diameter
74.6 mm

General

Brand
Tamron
Mount
Canon RF
Lens type
Zoom
Released
2026

Specification source: tamron.com

What can you shoot with the Tamron 17-70mm f/2.8 Di III-A VC RXD?

At 17-70mm this is a ultra-wide to standard zoom, which typically suits:

  • Landscapes and big skies
  • Architecture and interiors
  • Astrophotography and night skies
  • Landscapes and cityscapes
  • Street and travel photography

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

Frequently asked questions

What mount does the Tamron 17-70mm f/2.8 Di III-A VC RXD use?

It uses the Canon RF mount, so it fits Canon RF cameras directly.

What is the focal length of the Tamron 17-70mm f/2.8 Di III-A VC RXD?

It zooms across 17-70mm with a maximum aperture of f/2.8. That makes it a ultra-wide to standard lens.

Is the Tamron 17-70mm f/2.8 Di III-A VC RXD a prime or a zoom lens?

It is a zoom lens covering 17-70mm, so you can reframe without moving. Its maximum aperture is f/2.8.

What is the Tamron 17-70mm f/2.8 Di III-A VC RXD equivalent on a crop sensor?

On APS-C (1.6x crop) it frames like 27–112mm on full frame, with a 18.3–67° horizontal and 21.9–77° diagonal field of view. These figures are calculated from the focal length and crop factor.

Which cameras does the Tamron 17-70mm f/2.8 Di III-A VC RXD fit?

Any Canon RF-mount camera, including Canon EOS R, Canon EOS R1, Canon EOS R10, Canon EOS R100, and Canon EOS R3 and 13 more.