Sony FE 20-70mm F4 G vs Tamron 70-300mm F/4.5-6.3 Di III 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 20-70mm F4 G is faster by 0.3 stops (f/4.0 vs f/4.5), letting in more light.
- Sony FE 20-70mm F4 G is lighter by 57g.
- Sony FE 20-70mm F4 G goes wider (20mm vs 70mm).
- Tamron 70-300mm F/4.5-6.3 Di III RXD reaches further (300mm vs 70mm).
| Spec | FE 20-70mm F4 G | 70-300mm F/4.5-6.3 Di III RXD |
|---|---|---|
| Brand | Sony | Tamron |
| Mount | Sony E | Sony E |
| Type | Zoom | Telephoto Zoom |
| Focal length | 20-70mm (wider) | 70-300mm |
| Max aperture | f/4.0 (faster) | f/4.5 |
| Released | 2023 | n/a |
| Format | full-frame | full-frame |
| Weight g | 488.0 (lighter) | 545 |
| Filter mm | 72 | 67 |
| Length mm | 99.0 | 148.0 |
| Diameter mm | 78.7 | 77.0 |
| Min focus m | 0.25 (closer focusing) | 0.8 |
| Max magnification | 0.39 | n/a |
| Af motor | n/a | RXD |
Sony FE 20-70mm F4 G
A wide-to-standard full-frame zoom for Sony E-mount with constant f/4. It starts at 20mm, wider than the common 24mm standard zoom.
Pros
- 20mm wide end
- Constant f/4 aperture
- Compact at about 488 g
Cons
- Slower than f/2.8 zooms
- No stabilization in the lens
Tamron 70-300mm F/4.5-6.3 Di III RXD
Compact telephoto zoom for Sony full-frame covering 70-300mm. It has no stabilization and weighs about 545 g.
Pros
- Light at about 545 g
- Compact
- RXD focus motor
Cons
- No lens stabilization
- Slow aperture