Lens Comparison
Tamron 17-28mm F/2.8 Di III RXD vs Tamron 17-50mm f/4 Di III VXD
Key Differences
- Tamron 17-28mm F/2.8 Di III RXD has a better maximum aperture (f/2.8 vs f/4).
- Tamron 17-50mm f/4 Di III VXD has a better length (86.2mm vs 99mm).
- Tamron 17-28mm F/2.8 Di III RXD has a better weight (420g (14.8 oz) vs 460g (1.01 lb)).
- Tamron 17-50mm f/4 Di III VXD has a better max magnification (0.24x vs 0.19x).
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 17-28mm | 17-50mm |
| Lens Type | Zoom | Zoom |
| Optical Elements | 13 | 15 |
| Optical Groups | 12 | 11 |
| Aperture & Iris | ||
| Maximum Aperture | f/2.8 | f/4 |
| Minimum Aperture | f/22 | f/22 |
| 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 | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 19 cm | 19 cm |
| Max Magnification | 0.19x | 0.24x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $799 | $799 |
| Filter Size | 67mm | 67mm |
| Diameter | 73mm | 75mm |
| Length | 99mm | 86.2mm |
| Weight | 420g (14.8 oz) | 460g (1.01 lb) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
