Sony FE 28-70mm F2 GM vs Tamron 17-70mm F/2.8 Di III-A VC RXD
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Sony FE 28-70mm F2 GM is faster by 1 stop (f/2.0 vs f/2.8), letting in more light.
- Tamron 17-70mm F/2.8 Di III-A VC RXD goes wider (17mm vs 28mm).
| Spec | FE 28-70mm F2 GM | 17-70mm F/2.8 Di III-A VC RXD |
|---|---|---|
| Brand | Sony | Tamron |
| Mount | Sony E | Sony E |
| Type | Zoom | Zoom |
| Focal length | 28-70mm | 17-70mm (wider) |
| Max aperture | f/2.0 (faster) | f/2.8 |
| Released | 2024 | n/a |
| Format | full-frame | n/a |
| Weight g | 918.0 | n/a |
| Filter mm | 86 | n/a |
| Length mm | 139.8 | n/a |
| Diameter mm | 92.9 | n/a |
| Min focus m | 0.38 | n/a |
| Max magnification | 0.23 | n/a |
Sony FE 28-70mm F2 GM
Fast standard zoom for full-frame E-mount offering a constant f/2 aperture across 28-70mm. It is intended to cover several prime focal lengths in one lens.
Pros
- f/2 across the whole zoom range
- Wider aperture than a 24-70mm f/2.8
- Linear focus motors
Cons
- Heavier than f/2.8 zooms at about 918 g
- Starts at 28mm
Tamron 17-70mm F/2.8 Di III-A VC RXD
An APS-C standard zoom for Sony E that keeps f/2.8 across 17-70mm and adds VC stabilization. It uses an RXD focus motor.
Pros
- Constant f/2.8 with VC stabilization
- Wide 17-70mm range
- Quiet RXD focus
Cons
- APS-C only
- Larger than a kit zoom