Lens Comparison
Tamron 17-28mm F/2.8 Di III RXD vs Tamron 50-400mm f/4.5-6.3 Di III VC VXD
Key Differences
- Tamron 17-28mm F/2.8 Di III RXD has a better min focus distance (19 cm vs 72 cm).
- Tamron 17-28mm F/2.8 Di III RXD has a better weight (420g (14.8 oz) vs 1130g (2.49 lb)).
- Tamron 17-28mm F/2.8 Di III RXD has a better length (99mm vs 183.4mm).
- Tamron 17-28mm F/2.8 Di III RXD has a better maximum aperture (f/2.8 vs f/4.5).
- Tamron 50-400mm f/4.5-6.3 Di III VC VXD has a better max magnification (0.28x vs 0.19x).
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 17-28mm | 50-400mm |
| Lens Type | Zoom | Zoom |
| Optical Elements | 13 | 22 |
| Optical Groups | 12 | 16 |
| Aperture & Iris | ||
| Maximum Aperture | f/2.8 | f/4.5 |
| Minimum Aperture | f/22 | f/32 |
| Aperture Blades | 9 | 9 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | − | − |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | RXD | VXD |
| Focus Limiter | No | Yes |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 19 cm | 72 cm |
| Max Magnification | 0.19x | 0.28x |
| Stabilization & Video | ||
| Optical Stabilization | No | Yes |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $799 | $849 |
| Filter Size | 67mm | 82mm |
| Diameter | 73mm | 88.2mm |
| Length | 99mm | 183.4mm |
| Weight | 420g (14.8 oz) | 1130g (2.49 lb) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | Yes |
