Tamron Di III-A B070 17-70mm
Canon RF 24-50mm f/4.5-6.3 IS STM
What Buyers Say
Tamron Di III-A B070 17-70mm
The Tamron 17-70mm f/2.8 Di III-A VC RXD lens is widely praised for its sharpness, versatile zoom range, constant aperture, and effective stabilization, making it an excellent all-around lens for APS-C cameras. Users appreciate its solid build quality and value for money, though many note it is noticeably heavier and larger than typical kit lenses, which can feel unbalanced on smaller camera bodies. A few reviewers mention minor issues like chromatic aberration at the longer end and noise from the aperture blades at certain settings, but overall sentiment is very positive.
Pros
- sharp image quality across zoom range
- constant f/2.8 aperture
- effective image stabilization
- fast and quiet autofocus
- versatile 17-70mm focal range
Cons
- heavy and large for APS-C body
- chromatic aberration at 50-70mm
- aperture blade noise above f/5.6
- short zoom throw initially stiff
- no aperture ring on Fuji version
Canon RF 24-50mm f/4.5-6.3 IS STM
The Canon RF 24-50mm f/4.5-6.3 IS STM lens is praised for its compact size, light weight, and good image quality, making it a versatile and inconspicuous travel companion. Users appreciate its value, especially when bundled with a camera, and find it suitable for casual outings, gimbal work, and portraits. However, some note that the lens extends significantly when zoomed, which can be surprising, and the plastic mount and finicky lens cap are minor drawbacks. Overall, it is seen as a great budget-friendly option for those wanting a small full-frame zoom without the bulk of an L-series lens.
Pros
- Compact and lightweight design
- Good image quality for the price
- Versatile zoom range for travel
- Inconspicuous appearance
- Great value when bundled with camera
Cons
- Significant extension when zoomed
- Plastic mount feels cheap
- Frustrating lens cap design
- Limited bokeh due to small aperture
- Crack-prone latching system if dropped
Scores
Specifications
| Tamron Di III-A B070 17-70mm | Canon RF 24-50mm f/4.5-6.3 IS STM | |
|---|---|---|
| Optics | ||
| Type | zoom | zoom |
| Focal Length Min | 17 mm | 24 mm |
| Focal Length Max | 70 mm | 50 mm |
| Elements | 16 | 8 |
| Groups | 12 | 8 |
| Aspherical Elements | 3★ | 2 |
| ED Elements | 2★ | — |
| Coating | Fluorine Coating | Super Spectra Coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/6.3 |
| Min Aperture | f/2.8 | 4.5-6.3 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 9★ | 7 |
| Build | ||
| Mount | Nikon Z | Canon RF |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓★ | ✗ |
| Weight | 0.54 kg | 0.21 kg★ |
| Filter Thread | 67 mm | 58 mm |
| AF & Stabilization | ||
| AF Type | RXD | STM★ |
| Stabilization | ✓ | ✓ |
| Stabilization Stops | — | 4.5 stops★ |
| Focus | ||
| Min Focus Distance | 190 mm★ | 300 mm |
| Max Magnification | 1:4.8 | 1:9 |
Pros & Cons
Tamron Di III-A B070 17-70mm
- Strong optical (90th percentile)90th %ile
- Strong versatility (90th percentile)90th %ile
- Strong bokeh (89th percentile)89th %ile
- Strong aperture (86th percentile)86th %ile
Canon RF 24-50mm f/4.5-6.3 IS STM
- Strong stabilization (95th percentile)95th %ile
- Strong af (85th percentile)85th %ile
- Strong build (84th percentile)84th %ile
- Strong versatility (74th percentile)
- Below average user sentiment (30th percentile)
Pricing
Canon RF 24-50mm f/4.5-6.3 IS STM offers 1.9x better value for money
Verdict
Scores 91 overall, wins 7 of 9 usage categories and 6 of 22 specs.
