ProductIndex
Tamron 70-300mm F/4.5-6.3 Di III RXD Lens
One-line verdict
Compact lightweight telephoto zoom ideal for enthusiasts seeking sharp reach without bulk, trading in-lens stabilization and wide aperture for superior portability over pricier rivals.
How it compares
- vs Canon RF 100-400mm F5.6-8 IS USM ($650–$750): Tamron 70-300mm wins on price and wider aperture at the short end, Canon RF 100-400mm wins on reach (400mm vs 300mm) and in-lens image stabilization
- vs Sigma 18-50mm F2.8 DC DN ($550–$600): Tamron 70-300mm wins on telephoto reach for wildlife and sports, Sigma wins on aperture speed (f/2.8 constant) and low-light performance
- vs Tamron 17-70mm F2.8 Di III-A VC RXD ($600–$700): Tamron 70-300mm wins on telephoto reach and portability, Tamron 17-70mm wins on aperture speed, stabilization, and wide-angle coverage
- vs Canon RF 85mm f/2 Macro IS STM ($550–$650): Tamron 70-300mm wins on zoom range and reach for distant subjects, Canon RF 85mm wins on aperture speed, macro capability, and low-light shooting
AI-summarized review themes
Frequently Praised
- Exceptional sharpness across zoom range, even wide open
- Extremely lightweight and compact for telephoto use
- Fast quiet autofocus tracks birds and wildlife reliably
- Excellent value outperforms costlier Sony equivalents
- Solid build with weather sealing holds up outdoors
Frequently Criticized
- No optical stabilization challenges handheld low light
- Narrow f/6.3 aperture at 300mm limits dim conditions
- Soft edges at shorter focal lengths like 70mm
- Stiff zoom ring hinders smooth video pulls
- AF hunts occasionally on fast distant action
Best for
Wildlife and nature hikes, travel photography, sports from stands, enthusiast full-frame mirrorless
Not for
Low-light handheld without IBIS, demanding video gimbals, action requiring constant f/5.6 or faster
Specifications
| Spec | Value |
|---|---|
| Focal Length | 70-300mm |
| Maximum Aperture | f/4.5-6.3 |
| Optical Image Stabilization | No |
| Autofocus Motor | RXD stepping |
| Min. Focus Distance | 0.8m (wide) / 1.5m (tele) |
| Max. Magnification | 1:5.1 (tele) |
| Filter Size | 67mm |
| Diaphragm Blades | 7 (rounded) |
| Weight | 545g (Sony) |
| Length | 148mm (Sony) |
| Weather Sealing | Yes |
| Mounts | Sony E, Nikon Z |
Data sources
- Estimated ~800 purchase reviews via Amazon, B&H, Best Buy
- Review period: 2020–2026
- Sentiment confidence: high