Tamron Tamron Di III Tamron 11-20mm f/2.8 Di III-A RXD Lens (Canon RF) Review
The Tamron 11-20mm f/2.8 is a specialist: a sharp, incredibly light ultra-wide zoom for Canon's crop-sensor mirrorless cameras. Just don't expect image stabilization.
The 30-Second Version
A sharp, lightweight f/2.8 ultra-wide zoom made for Canon RF APS-C cameras. Its best score is for build quality (83rd percentile). Worth it if you need a fast, wide lens and don't mind the lack of stabilization.
Overview
The Tamron 11-20mm f/2.8 is a fast, compact ultra-wide zoom for Canon RF APS-C shooters. It gives you an 18-32mm equivalent field of view, which is perfect for squeezing in landscapes, architecture, or tight interiors.
It's built around that constant f/2.8 aperture, which is a big deal for low-light and astro work. At just 335 grams, it's a featherweight compared to most f/2.8 zooms, making it a great fit for a travel kit or a gimbal setup.
Performance
The optics are sharp, landing in the 78th percentile in our database. The special glass elements do a solid job controlling chromatic aberrations and flare. The autofocus is quick and near-silent thanks to the RXD motor, which is great for video. The big trade-off is the lack of image stabilization, which can be a pain for handheld video or low-light stills. Also, while it can focus pretty close (5.9" at 11mm), the bokeh is just okay for an f/2.8 lens, scoring in the middle of the pack.
Pros & Cons
Pros
- Strong build (84th percentile) 84th
- Strong optical (80th percentile) 80th
- Strong macro (79th percentile) 79th
Cons
The Word on the Street
Specifications
Full Specifications
Optics
| Type | Wide-Angle Zoom |
| Focal Length Min | 20 |
| Focal Length Max | 20 |
| Elements | 12 |
| Groups | 10 |
Aperture
| Max Aperture | f/2.8 |
| Min Aperture | f/16 |
| Constant | Yes |
| Diaphragm Blades | 7 |
Build
| Mount | Canon RF |
| Format | APS-C |
| Weight | 0.3 kg / 0.7 lbs |
| Filter Thread | 67 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 150 |
| Max Magnification | 1:4 |
Value & Pricing
At $659, it's not cheap, but it's a specialist. You're paying for that f/2.8 aperture in a tiny package. If you specifically need a wide, fast zoom for your Canon R7, R10, or R50, it's a compelling option. If you just want a general-purpose lens, your money goes further elsewhere.
vs Competition
This lens has a clear niche. The Sony E 11mm f/1.8 prime is smaller and brighter, but you lose the zoom flexibility. The Tamron 17-70mm f/2.8 is a more versatile standard zoom, but it starts at 17mm, so you miss that super-wide 11mm end. For Canon RF APS-C, the direct competition is slim—the native Canon RF-S 10-18mm is slower (f/4.5-6.3) but has stabilization. It's a classic trade-off: speed and size vs. stabilization and a lower price.
| Spec | Tamron Tamron Di III Tamron 11-20mm f/2.8 Di III-A RXD Lens (Canon RF) | Meike Meike 55mm F1.4 Standard Aperture APS-C Frame AF | Viltrox VILTROX 25mm F1.7 f/1.7 AF Lens for Fuji X Mount, | Canon Canon RF 24mm f/1.8 Macro IS STM Lens | Nikon Nikon S-Line Nikon NIKKOR Z 24-70mm f/2.8 S II Lens (Nikon Z) | Tamron Tamron Di III Tamron 17-70mm f/2.8 Di III-A VC RXD Lens for Sony |
|---|---|---|---|---|---|---|
| Focal Length | 20mm | 55mm | 25mm | 24mm | 24-70mm | 17-70mm |
| Max Aperture | f/2.8 | f/1.4 | f/1.7 | f/1.8 | f/2.8 | f/2.8 |
| Mount | Canon RF | Nikon Z | Fujifilm X | Canon RF | Nikon Z | Sony E Mount |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | false | false | false | true | false |
| Weight (g) | 335 | 281 | 400 | 269 | 676 | 544 |
| AF Type | Autofocus | STM | STM | Autofocus | Autofocus | Autofocus |
| Lens Type | Wide-Angle Zoom | - | - | Zoom | Zoom | Zoom |
Common Questions
Q: Is this lens weather-sealed?
It has a moisture-resistant construction, but it's not fully weather-sealed. Don't take it out in a downpour.
Q: Will this work on a full-frame Canon R camera?
Yes, but only in crop mode. Your camera will automatically switch, giving you about 18MP on a 30MP sensor like the R6 II.
Q: How does the close-focusing work?
You can focus as close as 5.9 inches at the 11mm end, which lets you get dramatic, wide-angle shots with exaggerated perspective.
Who Should Skip This
Skip this if you shoot a lot of handheld video or low-light stills without a tripod. The lack of stabilization is a real handicap there. Also, if you're a Fujifilm shooter who lives by aperture rings, this lens doesn't have one, and that's a deal-breaker for some.
Verdict
Buy this if you shoot on a Canon RF APS-C body and you're chasing landscapes, real estate, or the Milky Way. That constant f/2.8 in a lens this small is its killer feature. It's a tool for a specific job, and it does that job very well.