ProductIndex
Tamron 17-70mm f/2.8 Di III-A VC RXD Lens (B070)
One-line verdict
Versatile constant f/2.8 standard zoom for APS-C Sony and Fuji users seeking one-lens travel solution, but bulkier than compact alternatives like Sigma 18-50mm.
How it compares
- vs Sigma 18-50mm F2.8 DC DN ($550–$600): Tamron 17-70mm wins on zoom range (17-70mm vs 18-50mm) and built-in VC stabilization, Sigma wins on compactness, lighter weight, and lower price
- vs Sigma 16mm f/1.4 DC DN ($400–$500): Tamron 17-70mm wins on zoom versatility and stabilization for hybrid shooters, Sigma wins on maximum aperture and low-light/astrophotography performance
- vs Tamron 70-300mm F/4.5-6.3 Di III RXD ($500–$600): Tamron 17-70mm wins on aperture speed and wide-angle coverage for events, Tamron 70-300mm wins on telephoto reach and subject magnification
- vs Canon RF 35mm F1.8 Macro IS STM ($450–$550): Tamron 17-70mm wins on zoom flexibility and event versatility, Canon RF 35mm wins on compactness, price, and macro capability
AI-summarized review themes
Frequently Praised
- Exceptional edge-to-edge sharpness wide open across zoom range
- Fast accurate quiet autofocus for stills and video tracking
- Effective VC stabilization enables sharp handheld low-light shots
- Constant f/2.8 excels in dim conditions with pleasing bokeh
- Broad 17-70mm range covers landscapes to portraits without swapping
Frequently Criticized
- Heavier bulkier than kit lenses on small APS-C bodies
- Minor distortion at wide end requires in-camera correction
- Softer at 70mm telephoto end until stopped down
Best for
Travel photography, events weddings, hybrid photo-video enthusiasts
Not for
Ultra-compact street setups, pixel-peeping pros demanding prime-like bokeh
Specifications
| Spec | Value |
|---|---|
| Focal Length | 17-70mm (25.5-105mm equiv.) |
| Maximum Aperture | f/2.8 constant |
| Minimum Focus | 7.5” / 19cm (wide) |
| Image Stabilization | VC (up to 5 stops) |
| Autofocus Motor | RXD stepping |
| Filter Size | 67mm |
| Weight | 525g (Sony) / 530g (Fuji) |
| Dimensions | 74.6 x 119.3mm |
| Mounts | Sony E, Fuji X (APS-C) |
| Weather Sealing | Yes, moisture-resistant |
Data sources
- Estimated ~1820 purchase reviews via Amazon B&H
- Review period: 2021–2026
- Sentiment confidence: high